[jdbc] Update PostgreSQL JDBC driver to 42.4.3 (#13770)

* Bump postgresql in /bundles/org.openhab.persistence.jdbc

Bumps [postgresql](https://github.com/pgjdbc/pgjdbc) from 42.4.1 to 42.4.3.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](https://github.com/pgjdbc/pgjdbc/compare/REL42.4.1...REL42.4.3)

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

Signed-off-by: Jacob Laursen <jacob-github@vindvejr.dk>

bundles/org.openhab.persistence.jdbc/pom.xml

@@ -30,7 +30,7 @@
     <hsqldb.version>2.3.3</hsqldb.version>
     <mariadb.version>3.0.8</mariadb.version>
     <mysql.version>8.0.30</mysql.version>
-    <postgresql.version>42.4.1</postgresql.version>
+    <postgresql.version>42.4.3</postgresql.version>
     <sqlite.version>3.16.1</sqlite.version>
   </properties>