build(deps-dev): bump org.postgresql:postgresql in /db-scheduler

Bumps [org.postgresql:postgresql](https://github.com/pgjdbc/pgjdbc) from 42.5.1 to 42.7.2.
- [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:development
...

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

db-scheduler/pom.xml

@@ -24,7 +24,7 @@
         <bytebuddy.version>1.14.5</bytebuddy.version>
         <micro-jdbc.version>0.6.0</micro-jdbc.version>
         <zonky-pg-embedded.version>2.0.4</zonky-pg-embedded.version>
-        <postgresql.version>42.5.1</postgresql.version>
+        <postgresql.version>42.7.2</postgresql.version>
         <slf4j.version>1.7.36</slf4j.version>
         <test.excludedTags>compatibility,compatibility-cluster</test.excludedTags>
     </properties>