Merge pull request '[RELEASE] v1.21.10-0 release notes' (#3026) from earl-warren/forgejo:wip-release-notes-1.21 into forgejo
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/3026
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Reviewed-by: Otto <otto@codeberg.org>