Merge pull request #844 from mybatis/renovate/org.postgresql-postgresql-42.x

Update dependency org.postgresql:postgresql to v42.7.4

Author: hazendaz

pom.xml

@@ -181,7 +181,7 @@
     <dependency>
       <groupId>org.postgresql</groupId>
       <artifactId>postgresql</artifactId>
-      <version>42.7.3</version>
+      <version>42.7.4</version>
       <scope>test</scope>
     </dependency>
     <dependency>