Bump maven-plugin-testing-harness from 2.1 to 3.3.0#6

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dependabot/maven/org.apache.maven.plugin-testing-maven-plugin-testing-harness-3.3.0koh-osug/exec-maven-plugin:dependabot/maven/org.apache.maven.plugin-testing-maven-plugin-testing-harness-3.3.0Copy head branch name to clipboard