Bump postgresql from 42.5.3 to 42.5.4 (#81)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pom.xml

@@ -24,7 +24,7 @@
     <dependency>
       <groupId>org.postgresql</groupId>
       <artifactId>postgresql</artifactId>
-      <version>42.5.3</version>
+      <version>42.5.4</version>
     </dependency>
     <dependency>
       <groupId>${project.groupId}</groupId>