Bump org.postgresql:postgresql from 42.6.0 to 42.7.0

Bumps [org.postgresql:postgresql](https://github.com/pgjdbc/pgjdbc) from 42.6.0 to 42.7.0.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](pgjdbc/pgjdbc@REL42.6.0...REL42.7.0)

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

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

build.gradle

@@ -94,7 +94,7 @@ dependencies {
     implementation "org.javers:javers-core:${javersVersion}"
 
     // driver for postgres
-    implementation "org.postgresql:postgresql:42.6.0"
+    implementation "org.postgresql:postgresql:42.7.0"
     //driver for h2
     implementation "com.h2database:h2:2.2.224"