chore(deps): bump org.postgresql:postgresql in /dhis-2 (#19162)

Bumps [org.postgresql:postgresql](https://github.com/pgjdbc/pgjdbc) from 42.6.0 to 42.7.4.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](pgjdbc/pgjdbc@REL42.6.0...REL42.7.4)

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

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

dhis-2/pom.xml

@@ -125,7 +125,7 @@
     <!-- Data sources,db pools and db drivers -->
     <c3p0.version>0.9.5.5</c3p0.version>
     <HikariCP.version>5.1.0</HikariCP.version>
-    <postgresql-driver.version>42.6.0</postgresql-driver.version>
+    <postgresql-driver.version>42.7.4</postgresql-driver.version>
     <postgis-jdbc.version>2.5.1</postgis-jdbc.version>
     <datasource-proxy.version>1.9</datasource-proxy.version>