Bump org.postgresql:postgresql from 42.5.3 to 42.5.4 in /modules/questdb

Bumps [org.postgresql:postgresql](https://github.com/pgjdbc/pgjdbc) from 42.5.3 to 42.5.4.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](pgjdbc/pgjdbc@REL42.5.3...REL42.5.4)

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

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

Author: dependabot[bot]

modules/questdb/build.gradle

@@ -4,7 +4,7 @@ dependencies {
     api project(':testcontainers')
     api project(':jdbc')
 
-    testImplementation 'org.postgresql:postgresql:42.5.3'
+    testImplementation 'org.postgresql:postgresql:42.5.4'
     testImplementation project(':jdbc-test')
     testImplementation 'org.assertj:assertj-core:3.24.2'
     testImplementation 'org.questdb:questdb:7.0.0-jdk8'