Merge branch 'pks-ff-update-remote-mirror-inmemory-default-enable' into 'master'

Default-enable :update_remote_mirror_inmemory feature flag

See merge request gitlab-org/gitlab!64702

config/feature_flags/development/update_remote_mirror_inmemory.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/333517
 milestone: '14.0'
 type: development
 group: group::gitaly
-default_enabled: false
+default_enabled: true