Bump org.postgresql:postgresql from 42.7.2 to 42.7.3

Bumps [org.postgresql:postgresql](https://github.com/pgjdbc/pgjdbc) from 42.7.2 to 42.7.3.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](pgjdbc/pgjdbc@REL42.7.2...REL42.7.3)

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

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

build.gradle

@@ -52,7 +52,7 @@ dependencies {
     implementation group: 'net.sf', name: 'dbdeploy', version: '2.11.1'
     implementation group: 'com.mysql', name: 'mysql-connector-j', version: '8.3.0'
     implementation group: 'com.h2database', name: 'h2', version: '1.4.200' // Should match version at GoCD 20.5.0 release, since H2 dont guarantee backward compatiiblity
-    implementation group: 'org.postgresql', name: 'postgresql', version: '42.7.2'
+    implementation group: 'org.postgresql', name: 'postgresql', version: '42.7.3'
 
     testImplementation platform('org.junit:junit-bom:5.10.2')
     testImplementation group: "org.junit.jupiter", name: "junit-jupiter-api"