Merge branch 'revert-bc1b6253' into 'master'

Revert "Merge branch 'gitaly-version-v1.28.0' into 'master'"

See merge request gitlab-org/gitlab-ce!26037

GITALY_SERVER_VERSION

-1.28.0
+1.27.0

changelogs/unreleased/gitaly-version-v1.28.0.yml

----
-title: Upgrade to Gitaly v1.28.0
-merge_request: 26026
-author:
-type: changed