Bump org.postgresql:postgresql

Bumps [org.postgresql:postgresql](https://github.com/pgjdbc/pgjdbc) from 42.7.3 to 42.7.11.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](pgjdbc/pgjdbc@REL42.7.3...REL42.7.11)

---
updated-dependencies:
- dependency-name: org.postgresql:postgresql
  dependency-version: 42.7.11
  dependency-type: direct:production
...

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

Author: dependabot[bot]

flink-connector-jdbc-backward-compatibility/pom.xml

@@ -17,7 +17,7 @@
     <packaging>jar</packaging>
 
     <properties>
-        <postgres.version>42.7.3</postgres.version>
+        <postgres.version>42.7.11</postgres.version>
         <surefire.module.config>
             --add-opens=java.base/java.util=ALL-UNNAMED
             --add-opens=java.base/java.lang=ALL-UNNAMED
@@ -92,7 +92,7 @@
         <dependency>
             <groupId>org.postgresql</groupId>
             <artifactId>postgresql</artifactId>
-            <version>42.7.3</version>
+            <version>42.7.11</version>
             <scope>test</scope>
         </dependency>
     </dependencies>