Bump org.codehaus.plexus:plexus from 20 to 21 #617

Job	Run time
Build it / fail-fast-build	1m 2s
Build it / ubuntu-latest jdk-21-zulu	1m 0s
Build it / windows-latest jdk-24-zulu	1m 28s
Build it / ubuntu-latest jdk-24-zulu	52s
Build it / ubuntu-latest jdk-8-zulu	51s
Build it / windows-latest jdk-21-zulu	1m 39s
Build it / macos-latest jdk-8-zulu	1m 11s
Build it / macos-latest jdk-24-zulu	1m 22s
Build it / windows-latest jdk-8-zulu	1m 26s
Build it / macos-latest jdk-21-zulu	1m 1s
Deploy / Deploy	-1s
	11m 51s

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