Bump postgresql from 42.2.20 to 42.2.22 (#205)

Bumps [postgresql](https://github.com/pgjdbc/pgjdbc) from 42.2.20 to 42.2.22.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](https://github.com/pgjdbc/pgjdbc/commits)

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

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

server/pom.xml

@@ -14,7 +14,7 @@
     <properties>
         <springdoc.version>1.5.9</springdoc.version>
         <logback.logstash.version>6.6</logback.logstash.version>
-        <postgres.version>42.2.20</postgres.version>
+        <postgres.version>42.2.22</postgres.version>
     </properties>
 
     <dependencies>