[Snyk] Security upgrade org.hibernate:hibernate-entitymanager from 4.3.11.Final to 5.3.18.Final

[snyk-bot]

Snyk has created this PR to fix one or more vulnerable packages in the `maven` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • apollo-backend/pom.xml

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Upgrade	Breaking Change	Exploit Maturity
	619/1000 Why? Has a fix available, CVSS 8.1	SQL Injection SNYK-JAVA-ORGHIBERNATE-584563	org.hibernate:hibernate-entitymanager: 4.3.11.Final -> 5.3.18.Final	Yes	No Known Exploit
	800/1000 Why? Recently disclosed, Has a fix available, Medium severity	LGPL-2.0 license snyk:lic:maven:org.hibernate.common:hibernate-commons-annotations:LGPL-2.0	org.hibernate:hibernate-entitymanager: 4.3.11.Final -> 5.3.18.Final	Yes	No Data
	800/1000 Why? Recently disclosed, Has a fix available, Medium severity	LGPL-2.0 license snyk:lic:maven:org.hibernate:hibernate-core:LGPL-2.0	org.hibernate:hibernate-entitymanager: 4.3.11.Final -> 5.3.18.Final	Yes	No Data
	800/1000 Why? Recently disclosed, Has a fix available, Medium severity	LGPL-2.0 license snyk:lic:maven:org.hibernate:hibernate-entitymanager:LGPL-2.0	org.hibernate:hibernate-entitymanager: 4.3.11.Final -> 5.3.18.Final	Yes	No Data

(*) Note that the real score may have changed since the PR was raised.

Check the changes in this PR to ensure they won't cause issues with your project.

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