fix: pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-ORGCODEHAUSGROOVY-1048694
- https://snyk.io/vuln/SNYK-JAVA-ORGDOM4J-565810
- https://snyk.io/vuln/SNYK-JAVA-ORGHIBERNATE-1041788
- https://snyk.io/vuln/SNYK-JAVA-ORGHIBERNATE-584563
- https://snyk.io/vuln/SNYK-JAVA-ORGSPRINGFRAMEWORK-1009832
- https://snyk.io/vuln/SNYK-JAVA-ORGSPRINGFRAMEWORK-1296829
- https://snyk.io/vuln/SNYK-JAVA-ORGYAML-537645

pom.xml

@@ -64,7 +64,7 @@
         <dependency>
             <groupId>org.hibernate</groupId>
             <artifactId>hibernate-entitymanager</artifactId>
-            <version>4.3.8.Final</version>
+            <version>5.4.24.Final</version>
         </dependency>
 
         <!-- GraghQL -->