Bump postgresql from 42.5.4 to 42.6.0 (#616)

Bumps [postgresql](https://github.com/pgjdbc/pgjdbc) from 42.5.4 to 42.6.0.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](pgjdbc/pgjdbc@REL42.5.4...REL42.6.0)

---
updated-dependencies:
- dependency-name: org.postgresql:postgresql
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pom.xml

@@ -83,7 +83,7 @@
         <mongo-java-server.version>1.43.0</mongo-java-server.version>
         <netty.version>4.1.90.Final</netty.version>
         <okhttp.version>4.10.0</okhttp.version>
-        <postgresql.version>42.5.4</postgresql.version>
+        <postgresql.version>42.6.0</postgresql.version>
         <servo-core.version>0.13.2</servo-core.version>
         <snakeyaml.version>1.33</snakeyaml.version>
         <slf4j-api.version>2.0.7</slf4j-api.version>