build(deps): Bump org.postgresql:postgresql in the gradle group

Bumps the gradle group with 1 update: [org.postgresql:postgresql](https://github.com/pgjdbc/pgjdbc).


Updates `org.postgresql:postgresql` 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
  dependency-group: gradle
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -11,7 +11,7 @@ mockk = "1.14.2"
 mssql-server-driver = "12.10.0.jre11"
 mysql-driver = "9.3.0"
 oracle-driver = "23.8.0.25.04"
-postgresql-driver = "42.7.6"
+postgresql-driver = "42.7.7"
 slf4j = "2.0.17"
 sqlite = "3.49.1.0"
 test-containers = "1.21.1"