databases/pgpool-II-37: Update version 3.7.22=>3.7.23
- Add pgpool_flags rcvar for rc script
- Mark DEPRECATED as upstream EOL reaches on 2022-11
- Set EXPIRATION_DATE to 2022-12-30
Approved by: tz (private email)
Relnotes: https://www.pgpool.net/docs/latest/en/html/release-3-7-23.html
Sponsored by: Bounce Experts