General upgrade of thirdparty dependencies

[hohwille]

We already have some particular issues out to upgrade specific dependencies:

• QueryDSL: QueryDSL: switch from legacy to new API #614 use 4.1.x http://repo1.maven.org/maven2/com/querydsl/querydsl-jpa/
• Flyway: upgrade to flyway 5 #459 - meanwhile version 5.0.5+ http://repo1.maven.org/maven2/org/flywaydb/flyway-core/
• For Envers see Introduction of new version of hibernate envers jar in oasp4j-jpa-envers module. #540 - see Hibernate, 5.2.x http://repo1.maven.org/maven2/org/hibernate/hibernate-envers/

Further there are many outdated dependencies that need to be upgraded:

• Hibernate: 5.2.x http://repo1.maven.org/maven2/org/hibernate/hibernate-core/
• Spring: 5.0.x http://repo1.maven.org/maven2/org/springframework/spring-core/
• Spring-Boot: 2.0.x http://repo1.maven.org/maven2/org/springframework/boot/spring-boot-dependencies/
• CXF: 3.2.1+ http://repo1.maven.org/maven2/org/apache/cxf/cxf-core/

Finally this task should also include:

• alignment with my-thai-star (at least create an issue there to update accordingly). - see Upgrade to oasp4j 3.0.0 devonfw/my-thai-star#125

I guess there is a lot more. Please help to complete. I guess that with updating spring-boot we might get most of the additional versions anyway.

[hohwille]

Envers still needs to be upgraded:
https://github.com/oasp/oasp4j/blame/develop/boms/bom/pom.xml#L104

[hohwille]

I will also get away from

      <dependency>
        <groupId>org.hibernate.javax.persistence</groupId>
        <artifactId>hibernate-jpa-2.1-api</artifactId>
        <version>1.0.0.Final</version>
      </dependency>

and go to

      <dependency>
        <groupId>javax.persistence</groupId>
        <artifactId>javax.persistence-api</artifactId>
        <version>2.2</version>
      </dependency>

Because we now have more recent hibernate that supports it and the latter is an official JPA while the first one was kind of odd.

[hohwille]

Oops:
https://www.thoughts-on-java.org/hibernate-5-3/

[hohwille]

spring-projects/spring-boot#11725

[hohwille]

However spring-boot 2.1 is not in maven central - not even the milestone 2.1.0.M1. So for the moment it seems as if we cannot update to JPA 2.2 and will postpone this to a spring-boot 2.1.x upgrade.
I therefore just created #667

[hohwille]

Completed.