Merge branch 'tchu-bump-gitlab-elasticsearch-indexer-to-5.3' into 'master'

Bump gitlab-elasticsearch-indexer to 5.3

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/167465



Merged-by: John Mason <9717668-johnmason@users.noreply.gitlab.com>
Approved-by: John Mason <9717668-johnmason@users.noreply.gitlab.com>
Co-authored-by: Terri Chu <tchu@gitlab.com>