Bump postgresql from 42.3.3 to 42.3.4

Bumps [postgresql](https://github.com/pgjdbc/pgjdbc) from 42.3.3 to 42.3.4.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](pgjdbc/pgjdbc@REL42.3.3...REL42.3.4)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -13,7 +13,7 @@
 
     <groupId>org.exist-db</groupId>
     <artifactId>exist-postgresql-jdbc-driver</artifactId>
-    <version>42.3.3</version>
+    <version>42.3.4</version>
 
     <name>PostgreSQL JDBC Driver</name>
     <description>PostgreSQL JDBC Driver for eXist-db</description>