update org.postgresql:postgresql 42.2.5 to 42.7.2 (#10116)

frameworks/Java/gemini/servlet/pom.xml

@@ -29,7 +29,7 @@
         <dependency>
             <groupId>org.postgresql</groupId>
             <artifactId>postgresql</artifactId>
-            <version>42.2.5</version>
+            <version>42.7.2</version>
         </dependency>
         <dependency>
             <groupId>com.techempower</groupId>