fix: pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-ORGHIBERNATE-15038759

Author: snyk-bot

pom.xml

@@ -83,12 +83,12 @@
 		<dependency>
 			<groupId>org.hibernate</groupId>
 			<artifactId>hibernate-core</artifactId>
-			<version>5.1.0.Final</version>
+			<version>5.3.38.Final</version>
 		</dependency>
 		<dependency>
 			<groupId>org.hibernate</groupId>
 			<artifactId>hibernate-entitymanager</artifactId>
-			<version>5.1.0.Final</version>
+			<version>5.3.38.Final</version>
 		</dependency>
 		<dependency>
 			<groupId>org.mariadb.jdbc</groupId>