Update to use Maven 4

[sormuras]

Overview

Test-drive Maven 4 with JUnit's sample projects.

• https://maven.apache.org/docs/4.0.0-rc-3/release-notes.html

This PR also prevents the following warnings to be emitted:

Warning:  Version not locked for default bindings plugins [maven-resources-plugin, maven-compiler-plugin], you should define versions in pluginManagement section of your pom.xml or parent

Warning:  bootstrap class path not set in conjunction with -source 8
Warning:  source value 8 is obsolete and will be removed in a future release
Warning:  target value 8 is obsolete and will be removed in a future release
Warning: [WARNING] To suppress warnings about obsolete options, use -Xlint:-options.

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