Bump postgresql from 42.3.7 to 42.3.8

Bumps [postgresql](https://github.com/pgjdbc/pgjdbc) from 42.3.7 to 42.3.8.
- [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/REL42.3.7...REL42.3.8

)

---
updated-dependencies:
- dependency-name: org.postgresql:postgresql
  dependency-type: direct:production
...

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

pom.xml

@@ -32,7 +32,7 @@
         <bootstrap.version>3.3.7</bootstrap.version>
         <webjars-locator.version>0.36</webjars-locator.version>
         <h2.version>2.1.210</h2.version>
-        <postgresql.version>42.3.7</postgresql.version>
+        <postgresql.version>42.3.8</postgresql.version>
         <gson.version>2.8.9</gson.version>
         <slugify.version>2.1.5</slugify.version>
         <maven-resources-plugin.version>3.0.1</maven-resources-plugin.version>