Bump org.postgresql:postgresql from 42.5.4 to 42.7.3

Bumps [org.postgresql:postgresql](https://github.com/pgjdbc/pgjdbc) from 42.5.4 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@REL42.5.4...REL42.7.3)

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

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

build.gradle

@@ -74,7 +74,7 @@ dependencies {
  //runtimeOnly('org.springframework.boot:spring-boot-devtools')
  runtimeOnly('org.hsqldb:hsqldb')
  runtimeOnly('org.liquibase:liquibase-core:4.20.0')
- runtimeOnly(group: 'org.postgresql', name: 'postgresql', version: '42.5.4')
+ runtimeOnly(group: 'org.postgresql', name: 'postgresql', version: '42.7.3')
 
 
  annotationProcessor group: 'org.projectlombok', name: 'lombok', version: lombokVersion