Merge branch 'docs-bprescott/20230521-pg_14_gl_17' into 'master'

PostgreSQL requirements table: GitLab 17 will require PG14

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/121327



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