Bump org.codehaus.plexus:plexus-classworlds from 2.11.0 to 2.12.0 #290

Job	Run time
Verify / ${{ matrix.os }} jdk-${{ matrix.jdk }}-${{ matrix.distribution }} ${{ matrix.maven }}	-1s
Verify / ${{ inputs.ff-os }} jdk-${{ inputs.ff-jdk }}-${{ inputs.ff-jdk-distribution }} ${{ needs.setup-maven-version.outputs.version }}	-1s
Verify / setup-maven-version	-9s
	-11s

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