Bump postgresql from 9.3-1102-jdbc41 to 42.2.25 in /config
Bump postgresql from 9.3-1102-jdbc41 to 42.2.25 in /config

Bumps [postgresql](https://github.com/pgjdbc/pgjdbc) from 9.3-1102-jdbc41 to 42.2.25.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](https://github.com/pgjdbc/pgjdbc/commits/REL42.2.25)

---
updated-dependencies:
- dependency-name: org.postgresql:postgresql
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
peter-mount/opendata-common