databases/pgbackrest: update 2.51 → 2.53
Changelogs:
https://github.com/pgbackrest/pgbackrest/releases/tag/release/2.52
https://github.com/pgbackrest/pgbackrest/releases/tag/release/2.52.1
https://github.com/pgbackrest/pgbackrest/releases/tag/release/2.53
PR: 280409
MFH: 2024Q3