update to java 11 and jakarta (issue #105)

[nitschSB]

Resolves issue #105

In order to build it on my machine I had to remove the umlauts from .properties ´files.

Unit and integration tests are successful

[INFO] Results:
[INFO]
[INFO] Tests run: 178, Failures: 0, Errors: 0, Skipped: 0

[INFO] Results:
[INFO]
[INFO] Tests run: 9, Failures: 0, Errors: 0, Skipped: 0

Special thanks to

• https://docs.openrewrite.org/recipes/java/migrate/java8tojava11
• https://docs.openrewrite.org/recipes/java/migrate/jakarta/javaxmigrationtojakarta
• https://github.com/highsource/jaxb-tools/wiki/JAXB-Tools-Migration-Guide