MMeent 20a4d817ce Update vendored PostgreSQL versions to 14.7 and 15.2 (#3581) ...

## Describe your changes
Rebase vendored PostgreSQL onto 14.7 and 15.2

## Issue ticket number and link

#3579

## Checklist before requesting a review
- [x] I have performed a self-review of my code.
- [x] If it is a core feature, I have added thorough tests.
- [ ] Do we need to implement analytics? if so did you add the relevant
metrics to the dashboard?
- [x] If this PR requires public announcement, mark it with
/release-notes label and add several sentences in this section.
    ```
The version of PostgreSQL that we use is updated to 14.7 for PostgreSQL
14 and 15.2 for PostgreSQL 15.
    ```

2023-02-23 16:10:22 +02:00

..

postgres-v14 @ 468d3c0824

Update vendored PostgreSQL versions to 14.7 and 15.2 (#3581)

2023-02-23 16:10:22 +02:00

postgres-v15 @ 9a2093383a

Update vendored PostgreSQL versions to 14.7 and 15.2 (#3581)

2023-02-23 16:10:22 +02:00