Bump postgresql from 42.3.0 to 42.3.1

Bumps [postgresql](https://github.com/pgjdbc/pgjdbc) from 42.3.0 to 42.3.1.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](https://github.com/pgjdbc/pgjdbc/compare/REL42.3.0...REL42.3.1)

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

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

build.gradle

@@ -31,7 +31,7 @@ dependencies {
     implementation 'io.activej:activej-boot:5.0'
     implementation 'io.activej:activej-specializer:5.0'
     implementation 'io.activej:activej-launchers-http:5.0'
-    implementation 'org.postgresql:postgresql:42.3.0'
+    implementation 'org.postgresql:postgresql:42.3.1'
     implementation 'org.hibernate:hibernate-core:5.4.30.Final'
     implementation 'org.hibernate:hibernate-hikaricp:5.4.30.Final'
     implementation 'com.zaxxer:HikariCP:5.0.0'