scripts: Use release branch for changelog URL (#9380) (#9383)
* scripts: Use release branch for changelog URL
With a prerelease, /stable won't show the correct changelog.
* [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
(cherry picked from commit 21a186bbda5ce2407af6a626023879c8c5809431)
