Update Testing to v6 (major)

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
org.junit.platform:junit-platform-launcher (source)	1.14.0 → 6.0.3
org.junit.jupiter:junit-jupiter-params (source)	5.14.0 → 6.0.3
org.junit.jupiter:junit-jupiter-engine (source)	5.14.0 → 6.0.3
org.junit.jupiter:junit-jupiter-api (source)	5.14.0 → 6.0.3

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