Bump hibernate-core

Bumps [hibernate-core](https://github.com/hibernate/hibernate-orm) from 5.2.3.Final to 5.3.20.Final.
- [Release notes](https://github.com/hibernate/hibernate-orm/releases)
- [Changelog](https://github.com/hibernate/hibernate-orm/blob/5.3.20/changelog.txt)
- [Commits](hibernate/hibernate-orm@5.2.3...5.3.20)

---
updated-dependencies:
- dependency-name: org.hibernate:hibernate-core
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

samples/tutorials/AzureSqlGettingStartedSamples/java/Unix-based/AzureSqlHibernateSample/pom.xml

@@ -24,7 +24,7 @@
     <dependency>
         <groupId>org.hibernate</groupId>
         <artifactId>hibernate-core</artifactId>
-        <version>5.2.3.Final</version>
+        <version>5.3.20.Final</version>
     </dependency>
     <dependency>
         <groupId>org.javassist</groupId>