Bump org.postgresql:postgresql from 42.7.6 to 42.7.7 (#513)

Bumps [org.postgresql:postgresql](https://github.com/pgjdbc/pgjdbc) from 42.7.6 to 42.7.7.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](pgjdbc/pgjdbc@REL42.7.6...REL42.7.7)

---
updated-dependencies:
- dependency-name: org.postgresql:postgresql
  dependency-version: 42.7.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]

pom.xml

@@ -149,7 +149,7 @@
 		<dependency>
 			<groupId>org.postgresql</groupId>
 			<artifactId>postgresql</artifactId>
-			<version>42.7.6</version>
+			<version>42.7.7</version>
 		</dependency>
 
 		<dependency>