Bump postgresql from 42.2.8 to 42.4.1

Bumps [postgresql](https://github.com/pgjdbc/pgjdbc) from 42.2.8 to 42.4.1.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](pgjdbc/pgjdbc@REL42.2.8...REL42.4.1)

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

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

Author: dependabot[bot]

pom.xml

@@ -16,7 +16,7 @@
         <java.version>1.8</java.version>
         <spring.boot.version>2.2.1.RELEASE</spring.boot.version>
         <lombok.version>1.18.10</lombok.version>
-        <postgreSQL.version>42.2.8</postgreSQL.version>
+        <postgreSQL.version>42.4.1</postgreSQL.version>
         <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
     </properties>