build(deps-dev): bump org.postgresql:postgresql from 42.7.5 to 42.7.6 (#2400)

Bumps [org.postgresql:postgresql](https://github.com/pgjdbc/pgjdbc) from 42.7.5 to 42.7.6.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](pgjdbc/pgjdbc@REL42.7.5...REL42.7.6)

---
updated-dependencies:
- dependency-name: org.postgresql:postgresql
  dependency-version: 42.7.6
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]

embedded-postgresql/pom.xml

@@ -13,7 +13,7 @@
     <artifactId>embedded-postgresql</artifactId>
 
     <properties>
-        <postgresql-driver.version>42.7.5</postgresql-driver.version>
+        <postgresql-driver.version>42.7.6</postgresql-driver.version>
     </properties>
 
     <dependencies>