chore(release): Add generate-changelog script

[github-actions]

Note

The pull request "chore(release): Add generate-changelog script" was created by @s1gr1d but did not reference an issue. Therefore this issue was created for better visibility in external tools like Linear.

I know we'll be using the craft release notes soon, but this can be beneficial for the time being. I've never had a lot of luck with the cursor command and this deterministic script might help other people as well.

[linear]

JS-1565

[github-actions]

A PR closing this issue has just been released 🚀

This issue was referenced by PR #18999, which was included in the 10.38.0 release.