タグは来たけどversion.rbは更新してないのかな？
* [new tag] v2.5.1 -> v2.5.1
25744d43b (upstream/master) Ensure only toots from the reported users are reported (#8916)
09d789e79 Add POST /api/v1/notifications/:id/dismiss (#8905)
886af5ce1 Add fallback for PostgreSQL without upsert in CopyStatusStats (#8903)
2fb692ea4 i18n: Update Polish translation (#8901)
84f82ee2f Improve production build config (#8899)
28401962c Change documentation URL (#8898)