[MPIR-432] upgrade to parent POM 39

[elharo]

No description provided.

[slawekjaranowski]

Please check for duplicate license headers:

git grep -c "Licensed to the Apache Software Foundation (ASF) under one" | grep -v ":1"

[slawekjaranowski]

interesting build error on JDK 11

Error:  Step 'palantir-java-format' found problem in 'src/main/java/org/apache/maven/report/projectinfo/dependencies/renderer/DependenciesRenderer.java':
No enum constant javax.lang.model.element.Modifier.SEALED

I have not seen before such ...

[elharo]

Fixed the duplicate licenses. The Modifier.SEALED problem remains. I am really not happy with the palantir-java-format. It seems quite buggy and unreliable. I wonder if google-java-format is better? This problem could mean that palantir-java-format is looking at the byte code and getting confused about VM versions.

[elharo]

google/google-java-format#697

[slawekjaranowski]

discovered palantir-java-format issue palantir/palantir-java-format#865