[MNG-6825] Replace StringUtils with Commons Lang3

[timtebeek]

No description provided.

[elharo]

The failing build is likely broken already. I'm looking into it.

[elharo]

Please rebase. The failing CI should now pass, and then we'll be good to go.

[timtebeek]

Resolved the conflicts, but I assume we'll want to first remove the StringUtils.is(Not)Empty/Blank, which will likely result in unused imports here.

[elharo]

I don't think we have to remove StringUtils.is(Not)Empty/Blank first, though it's fine if someone wants to do that.

[timtebeek]

Looks like we'll move away from commons-lang3 instead; https://issues.apache.org/jira/browse/MNG-6829
Closing this one in favor of changes such as replacing StringUtils.isEmpty/isNotEmpty with JDK internals.

[elharo]

JDK > commons-lang3 > maven-shared-utils > plexus-utils

If we can go straight to JDK only, wonderful, but I'd still approve a PR that replaces plexus with commons lang.

[timtebeek]

Would you like to see this recreated now that we have 40fe444 merged in? It'd swap even fewer imports, with no new dependency as commons-lang3 is already a dependency.

maven-pmd-plugin/pom.xml

Lines 148 to 150 in 40fe444

	<groupId>org.apache.commons</groupId>
	<artifactId>commons-lang3</artifactId>
	<version>3.12.0</version>

[elharo]

sure, if this is still relevant, do it