Update dependency org.apache.maven.plugin-testing:maven-plugin-testing-harness to v4.0.0-beta-1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.apache.maven.plugin-testing:maven-plugin-testing-harness (source)	4.0.0-alpha-2 -> 4.0.0-beta-1

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