Bump org.postgresql:postgresql from 42.7.8 to 42.7.9 (#274)

Author: dependabot[bot]

pom.xml

@@ -113,7 +113,7 @@
     <mockito.version>5.21.0</mockito.version>
     <nextbreakpoint.flink.client.version>1.1.4</nextbreakpoint.flink.client.version>
     <picocli.version>4.7.7</picocli.version>
-    <postgres.version>42.7.8</postgres.version>
+    <postgres.version>42.7.9</postgres.version>
     <slf4j.version>1.7.36</slf4j.version>
     <testcontainers.version>2.0.3</testcontainers.version>