releases: add TiDB 6.1.1 release notes (#10139)#10302

ti-chi-bot merged 1 commit into

pingcap:release-6.2pingcap/docs:release-6.2from

ti-chi-bot:cherry-pick-10139-to-release-6.2ti-chi-bot/docs:cherry-pick-10139-to-release-6.2Copy head branch name to clipboard