fix(deps): update junit-framework monorepo to v6

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
org.junit.jupiter:junit-jupiter-api (source)	5.13.4 → 6.1.0
org.junit.jupiter:junit-jupiter-params (source)	5.13.4 → 6.1.0
org.junit.jupiter:junit-jupiter-engine (source)	5.13.4 → 6.1.0
org.junit.jupiter:junit-jupiter (source)	5.13.4 → 6.1.0

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✅ All modified and coverable lines are covered by tests.

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[dtoxvanilla1991]

@copilot Check for any migration required since it is a major -v bump.

[Copilot]

@copilot Check for any migration required since it is a major -v bump.

Checked it: this repo already meets the JUnit 6 migration requirements (<release>17</release> and Surefire 3.5.6). I also verified targeted kinde-core tests plus the existing JUnit 4-based kinde-j2ee tests, and they pass with JUnit 6 (Surefire auto-resolves Vintage for the JUnit 4 tests). I didn’t find any additional migration changes needed in the repository for this bump.