Release v0.39.0 (#7987)

# Description

* Adding 0.39.0 to the supported versions
* Deprecating v0.38.0

## Type of change

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- This pull request is a minor refactor, code cleanup, test improvement,
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Fixes: #issue_number

## Contributor checklist
Please verify that the PR meets the following requirements, where
applicable:

- [ ] An overview of proposed schema changes is included in a linked
GitHub issue. -- N/A
- [ ] A design document PR is created in the [design-notes
repository](https://github.com/radius-project/design-notes/), if new
APIs are being introduced. -- N/A
- [ ] If applicable, design document has been reviewed and approved by
Radius maintainers/approvers. -- N/A
- [ ] A PR for the [samples
repository](https://github.com/radius-project/samples) is created, if
existing samples are affected by the changes in this PR. -- N/A
- [ ] A PR for the [documentation
repository](https://github.com/radius-project/docs) is created, if the
changes in this PR affect the documentation or any user facing updates
are made. -- N/A
- [ ] A PR for the [recipes
repository](https://github.com/radius-project/recipes) is created, if
existing recipes are affected by the changes in this PR. -- N/A

---------

Signed-off-by: karishma-chawla <74574173+karishma-chawla@users.noreply.github.com>
Signed-off-by: Karishma Chawla <kachawla@microsoft.com>
Signed-off-by: Will <28876888+willtsai@users.noreply.github.com>
Co-authored-by: karishma-chawla <74574173+karishma-chawla@users.noreply.github.com>
Co-authored-by: Will <28876888+willtsai@users.noreply.github.com>
Co-authored-by: Reshma Abdul Rahim <61033581+Reshrahim@users.noreply.github.com>
(cherry picked from commit 12d6bce)

docs/release-notes/v0.39.0.md

@@ -0,0 +1,69 @@
+# Announcing Radius v0.39.0
+
+Today we're happy to announce the release of Radius v0.39.0. Check out the [highlights](#highlights) below, along with the [full changelog](#full-changelog) for more details.
+
+We would like to extend our thanks to all the [new](#new-contributors) and existing contributors who helped make this release possible!
+
+## Intro to Radius
+
+If you're new to Radius, check out our website, [radapp.io](https://radapp.io), for more information. Also visit our [getting started guide](https://docs.radapp.io/getting-started/) to learn how to install Radius and create your first app.
+
+## Highlights
+
+### Support for Dapr Configuration Building Block
+A new `Applications.Dapr/configurationStores` resource type is now available to define and deploy the [Dapr Configuration](https://docs.dapr.io/getting-started/quickstarts/configuration-quickstart/) building block in Radius. The Dapr Configuration building block allows for dynamic configuration updates, including feature flag management, and is a great addition to the Dapr integration in Radius. To learn more, go to the [Dapr Configuration Store resource schema](https://docs.radapp.io/reference/resource-schema/dapr-schema/configurationstore/) in the Radius documentation. Thanks to community contributor @SoTrx for adding this functionality.
+
+### In-memory data store for testing and development
+Radius has added an implementation for an in-memory version of the data store interface, which may be used for testing and development purposes, when contributing to Radius. This helps to speed up and simplify the existing ETC.d and mocking mechanisms that are frequently used today in tests.
+
+## Breaking changes
+None.
+
+## Upgrading to Radius v0.39.0
+
+During our preview stage, an upgrade to Radius v0.39.0 requires a full reinstallation of the Radius control-plane, rad CLI, and all Radius apps. Stay tuned for an in-place upgrade path in the future.
+
+1. Delete any environments you have created:
+
+   ```bash
+   rad env delete <env-name>
+   ```
+
+2. Uninstall the previous version of the Radius control-plane:
+
+   ```bash
+   rad uninstall kubernetes
+   ```
+
+3. Visit the [Radius installation guide](https://docs.radapp.io/getting-started/install/) to install the latest CLI, or download a binary below
+
+4. Install the latest version of the Radius control-plane:
+
+   ```bash
+   rad install kubernetes
+   ```
+
+## Full changelog
+
+* Update version to 0.38 in versions.yaml by @ytimocin in https://github.com/radius-project/radius/pull/7924
+* Bump bicep-types from `99cdcee` to `d936309` by @dependabot in https://github.com/radius-project/radius/pull/7929
+* Implementation of Dapr Building Block: Configuration Store by @SoTrx in https://github.com/radius-project/radius/pull/7906
+* Updating and reformatting the release doc by @ytimocin in https://github.com/radius-project/radius/pull/7933
+* Update the timeout of the clean-up cluster step to 1h by @ytimocin in https://github.com/radius-project/radius/pull/7938
+* Add dapr-sts* namespaces to be deleted to the clean-up workflow by @ytimocin in https://github.com/radius-project/radius/pull/7942
+* Update golangci-lint version and fix new warnings by @ytimocin in https://github.com/radius-project/radius/pull/7951
+* Improve validation and simplify database tests by @rynowak in https://github.com/radius-project/radius/pull/7949
+* Separating purge old images and purge Azure test resources workflows by @ytimocin in https://github.com/radius-project/radius/pull/7937
+* Bump peter-evans/create-pull-request from 6 to 7 in the all group by @dependabot in https://github.com/radius-project/radius/pull/7904
+* Bump bicep-types from `d936309` to `ebba845` by @dependabot in https://github.com/radius-project/radius/pull/7957
+* Add an in-memory data store by @rynowak in https://github.com/radius-project/radius/pull/7950
+* Removing bicep workaround + minor cleanup by @sk593 in https://github.com/radius-project/radius/pull/7965
+* Update the bicep extension used in the dev container by @brooke-hamilton in https://github.com/radius-project/radius/pull/7969
+* Implement PostgreSQL datastore by @rynowak in https://github.com/radius-project/radius/pull/7961
+* Add a PR Checklist for Contributions by @kachawla in https://github.com/radius-project/radius/pull/7921
+* Bump bicep-types from `ebba845` to `96b34cb` by @dependabot in https://github.com/radius-project/radius/pull/7971
+* Fix compiler and test failures with latest version of sigs.k8s.io/controller-runtime by @brooke-hamilton in https://github.com/radius-project/radius/pull/7979
+* Bump the all group across 1 directory with 38 updates by @kachawla in https://github.com/radius-project/radius/pull/7981
+* Implementation of resource providers and resource types registration by @rynowak in https://github.com/radius-project/radius/pull/7967
+* Release 0.39: Create RC release by @kachawla in https://github.com/radius-project/radius/pull/7983
+* Skipping one of the text prompt tests by @ytimocin in https://github.com/radius-project/radius/pull/7985

versions.yaml

@@ -1,9 +1,9 @@
 supported:
   - channel: '0.39'
-    version: 'v0.39.0-rc1'
+    version: 'v0.39.0'
+deprecated:
   - channel: '0.38'
     version: 'v0.38.0'
-deprecated:
   - channel: '0.37'
     version: 'v0.37.0'
   - channel: '0.36'