Bump org.postgresql:postgresql from 42.5.4 to 42.7.1

Bumps [org.postgresql:postgresql](https://github.com/pgjdbc/pgjdbc) from 42.5.4 to 42.7.1.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](pgjdbc/pgjdbc@REL42.5.4...REL42.7.1)

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

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

pom.xml

@@ -713,7 +713,7 @@
               <dependency>
                 <groupId>org.postgresql</groupId>
                 <artifactId>postgresql</artifactId>
-                <version>42.5.4</version>
+                <version>42.7.1</version>
               </dependency>
             </dependencies>
           </plugin>