Bump postgresql from 42.3.3 to 42.4.1 in /frameworks/Java/hserver

Bumps [postgresql](https://github.com/pgjdbc/pgjdbc) from 42.3.3 to 42.4.1.
- [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/REL42.3.3...REL42.4.1)

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

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

frameworks/Java/hserver/pom.xml

@@ -10,7 +10,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <version.hikaricp>3.3.1</version.hikaricp>
-        <version.postgres>42.3.3</version.postgres>
+        <version.postgres>42.4.1</version.postgres>
         <version.hserver>2.9.90</version.hserver>
     </properties>