Bump org.assertj:assertj-core from 3.27.6 to 3.27.7 in /plexus-java #606

Job	Run time
Build it / fail-fast-build	48s
Build it / ubuntu-latest jdk-8-zulu	20s
Build it / windows-latest jdk-21-zulu	1m 19s
Build it / ubuntu-latest jdk-21-zulu	30s
Build it / ubuntu-latest jdk-25-zulu	27s
Build it / windows-latest jdk-25-zulu	1m 5s
Build it / windows-latest jdk-8-zulu	59s
Build it / macos-latest jdk-25-zulu	48s
Build it / macos-latest jdk-21-zulu	1m 6s
Build it / macos-latest jdk-8-zulu	37s
	7m 59s

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