Update dependency org.postgresql:postgresql to v42.7.4

pom.xml

@@ -98,7 +98,7 @@ OF THE POSSIBILITY OF SUCH DAMAGE.
     <dependency>
       <groupId>org.postgresql</groupId>
       <artifactId>postgresql</artifactId>
-      <version>42.7.3</version>
+      <version>42.7.4</version>
       <scope>test</scope>
     </dependency>
     <dependency>