Bump postgresql from 9.4.1212 to 42.3.7

Bumps [postgresql](https://github.com/pgjdbc/pgjdbc) from 9.4.1212 to 42.3.7.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](https://github.com/pgjdbc/pgjdbc/compare/REL9.4.1212...REL42.3.7)

---
updated-dependencies:
- dependency-name: org.postgresql:postgresql
  dependency-type: direct:production
...

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

pom.xml

@@ -98,7 +98,7 @@
         <dependency>
             <groupId>org.postgresql</groupId>
             <artifactId>postgresql</artifactId>
-            <version>9.4.1212</version>
+            <version>42.3.7</version>
             <type>jar</type>
             <scope>provided</scope>
         </dependency>