Bump hibernate.version from 5.5.6 to 5.5.7.Final in /core

Bumps `hibernate.version` from 5.5.6 to 5.5.7.Final.

Updates `hibernate-ehcache` from 5.5.6 to 5.5.7.Final
- [Release notes](https://github.com/hibernate/hibernate-orm/releases)
- [Changelog](https://github.com/hibernate/hibernate-orm/blob/main/changelog.txt)
- [Commits](https://github.com/hibernate/hibernate-orm/compare/5.5.6...5.5.7)

Updates `hibernate-jpamodelgen` from 5.5.6 to 5.5.7.Final
- [Release notes](https://github.com/hibernate/hibernate-orm/releases)
- [Changelog](https://github.com/hibernate/hibernate-orm/blob/main/changelog.txt)
- [Commits](https://github.com/hibernate/hibernate-orm/compare/5.5.6...5.5.7)

---
updated-dependencies:
- dependency-name: org.hibernate:hibernate-ehcache
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.hibernate:hibernate-jpamodelgen
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Closes #241

Change-Id: Ia28554357e4f4010136aac6543641a2b6a77f364
diff --git a/core/pom.xml b/core/pom.xml
index fa84189..58d6155 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -11,7 +11,7 @@
 		<spring.version>5.3.9</spring.version>
 		<jersey.version>1.19.4</jersey.version>
 		<jetty.version>9.4.43.v20210629</jetty.version>
-		<hibernate.version>5.5.6</hibernate.version>
+		<hibernate.version>5.5.7.Final</hibernate.version>
 		<flyway.version>7.13.0</flyway.version>
 		<log4j.version>2.14.1</log4j.version>
 		<krill.version>[0.59.3,)</krill.version>