Merge branch 'docs/bprescott/20221209-geodb' into 'master'

Locale and PostgreSQL indexes

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/106537



Merged-by: Achilleas Pipinellis <axil@gitlab.com>
Reviewed-by: Achilleas Pipinellis <axil@gitlab.com>
Co-authored-by: Ben Prescott <bprescott@gitlab.com>