Bump org.postgresql:postgresql in /frameworks/Java/javalin (#8759)

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:production
...

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

frameworks/Java/javalin/pom.xml

@@ -15,7 +15,7 @@
         <slf4j.version>2.0.3</slf4j.version>
         <jackson.version>2.13.4</jackson.version>
         <hikaricp.version>5.0.1</hikaricp.version>
-        <postgresql.version>42.5.1</postgresql.version>
+        <postgresql.version>42.7.2</postgresql.version>
         <mongodb.version>4.7.2</mongodb.version>
         <jte.version>2.2.3</jte.version>
     </properties>