Co-authored-by: Casey Waldren <cwaldren@launchdarkly.com>

Adds a link to the Github releases page, with a search query for the
client package.

Enforces a minimum client-side polling interval of 5 minutes. The error
message has been slightly updated for clarity.

Moves application tag into HTTP Config, so it can propagate to data
sources + event sender.

🤖 I have created a release *beep* *boop*
---


<details><summary>launchdarkly-cpp-client: 3.0.1</summary>

##
[3.0.1](launchdarkly-cpp-client-v3.0.0...launchdarkly-cpp-client-v3.0.1)
(2023-06-08)


### Bug Fixes

* enforce minimum polling interval of 5 minutes
([#144](#144))
([2d60197](2d60197))
* ensure x-launchdarkly-tags is sent in event requests
([#145](#145))
([c8b3aee](c8b3aee))


### Dependencies

* The following workspace dependencies were updated
  * dependencies
    * launchdarkly-cpp-internal bumped from 0.1.3 to 0.1.4
    * launchdarkly-cpp-common bumped from 0.3.0 to 0.3.1
</details>

<details><summary>launchdarkly-cpp-common: 0.3.1</summary>

##
[0.3.1](launchdarkly-cpp-common-v0.3.0...launchdarkly-cpp-common-v0.3.1)
(2023-06-08)


### Bug Fixes

* enforce minimum polling interval of 5 minutes
([#144](#144))
([2d60197](2d60197))
* ensure x-launchdarkly-tags is sent in event requests
([#145](#145))
([c8b3aee](c8b3aee))
</details>

<details><summary>launchdarkly-cpp-internal: 0.1.4</summary>

### Dependencies

* The following workspace dependencies were updated
  * dependencies
    * launchdarkly-cpp-common bumped from 0.3.0 to 0.3.1
</details>

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Casey Waldren <cwaldren@launchdarkly.com>