Bump org.postgresql:postgresql from 42.7.2 to 42.7.3 (#357)

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
...

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gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [libraries]
 jsr305 = "com.google.code.findbugs:jsr305:3.0.2"
-postgresql = "org.postgresql:postgresql:42.7.2"
+postgresql = "org.postgresql:postgresql:42.7.3"
 logback-classic = "ch.qos.logback:logback-classic:1.2.12"
 slf4j-api = "org.slf4j:slf4j-api:1.7.36" # to be compatible with Spring Boot 2.7.X
 apache-commons-dbcp2 = "org.apache.commons:commons-dbcp2:2.12.0"