Bump postgresql from 42.3.3 to 42.3.4 (#37)

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]>

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

Author: dependabot[bot]

pom.xml

@@ -45,7 +45,7 @@
         <hibernate.version>5.6.8.Final</hibernate.version>
         <hikari.version>5.0.1</hikari.version>
         <flyway.version>8.5.8</flyway.version>
-        <postgresql.version>42.3.3</postgresql.version>
+        <postgresql.version>42.3.4</postgresql.version>
         <vault-jdbc.version>1.3.9</vault-jdbc.version>
 
         <junit.version>5.8.2</junit.version>