Bump org.postgresql:postgresql in /by-language/java-qa

Bumps [org.postgresql:postgresql](https://github.com/pgjdbc/pgjdbc) from 42.7.1 to 42.7.2.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](pgjdbc/pgjdbc@REL42.7.1...REL42.7.2)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

by-language/java-qa/pom.xml

@@ -16,7 +16,7 @@
     <dependency>
         <groupId>org.postgresql</groupId>
         <artifactId>postgresql</artifactId>
-        <version>42.7.1</version>
+        <version>42.7.2</version>
     </dependency>
     <dependency>
         <groupId>io.crate</groupId>