Bump postgresql from 42.2.23 to 42.4.1 in /frameworks/Kotlin/ktor/ktor

Bumps [postgresql](https://github.com/pgjdbc/pgjdbc) from 42.2.23 to 42.4.1.
- [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/REL42.2.23...REL42.4.1)

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

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

frameworks/Kotlin/ktor/ktor/pom.xml

@@ -20,7 +20,7 @@
         <hikaricp.version>5.0.0</hikaricp.version>
         <logback.version>1.2.4</logback.version>
         <mysql.version>8.0.28</mysql.version>
-        <postgresql.version>42.2.23</postgresql.version>
+        <postgresql.version>42.4.1</postgresql.version>
     </properties>
 
     <dependencies>