Bump org.codehaus.plexus:plexus-testing from 1.2.0 to 1.3.0 #341

Job	Run time
Build it / fail-fast-build	2m 35s
Build it / Experimental Java 21 build	26s
Build it / ubuntu-latest jdk-8-temurin	23s
Build it / ubuntu-latest jdk-11-temurin	22s
Build it / ubuntu-latest jdk-17-temurin	33s
Build it / windows-latest jdk-8-temurin	1m 14s
Build it / windows-latest jdk-11-temurin	1m 23s
Build it / windows-latest jdk-17-temurin	3m 13s
Build it / macOS-latest jdk-8-temurin	2m 49s
Build it / macOS-latest jdk-11-temurin	45s
Build it / macOS-latest jdk-17-temurin	1m 0s
Deploy / Deploy	14s
	14m 57s

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