Bump org.postgresql:postgresql

Bumps [org.postgresql:postgresql](https://github.com/pgjdbc/pgjdbc) from 42.5.1 to 42.7.1.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](pgjdbc/pgjdbc@REL42.5.1...REL42.7.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

data-prepper-plugins/kafka-connect-plugins/build.gradle

@@ -39,7 +39,7 @@ dependencies {
     implementation 'com.github.luben:zstd-jni:1.5.0-2'
     // Debezium Postgres connector
     implementation 'io.debezium:debezium-connector-postgres:2.3.0.Final'
-    implementation 'org.postgresql:postgresql:42.5.1'
+    implementation 'org.postgresql:postgresql:42.7.1'
     implementation 'com.google.protobuf:protobuf-java:3.19.6'
     // Debezium Mongodb connector
     implementation 'io.debezium:debezium-connector-mongodb:2.3.0.Final'