Update release docs for refreshing CI tokens (#942)

Author: fendor

docs/Release.md

@@ -15,3 +15,18 @@ Follow this list for items that must be completed for release of the `vscode-has
 - [ ] Perform the release by creating a [release in Github](https://github.com/haskell/vscode-haskell/releases)
   - Github actions will automatically release the extension to VSCode- and VSX-Marketplace.
   - If you want to create a pre-release, create a [pre-release in Github](https://github.com/haskell/vscode-haskell/releases). The github action will perform the appropriate actions automatically and publish the pre-release of the extension to VSCode- and VSX-Marketplace.
+
+## Release CI
+
+The release CI has access tokens for VSX Marketplace and the VSCode Marketplace.
+
+Seemingly, the VSX Marketplace token does not expire. If it is lost for some reason, follow the steps below. Fendor can also generate a VSX Marketplace token.
+
+The latter needs to be refreshed once a year.
+
+* Send an email to `committee@haskell.org` requesting the token
+  * Include your public GPG key so they can send you the token encrypted
+* Update the repository secrets
+  * People from the [@haskell-ide](https://github.com/orgs/haskell/teams/haskell-ide) have full access to the vscode-haskell repo and can update secrets
+
+Last time the VSCode Marketplace token was updated: 2023-08-17