Merge branch '502817-reindex-elasticsearch-users-to-update-integer-to-long-type' into 'master'

Elasticsearch migration: Reindex Elasticsearch user index to update integer with long type

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/182733



Merged-by: Arturo Herrero <arturo.herrero@gmail.com>
Approved-by: Madelein van Niekerk <mvanniekerk@gitlab.com>
Approved-by: John Mason <9717668-johnmason@users.noreply.gitlab.com>