RFR: 7904055: Update jtreg to bundle JUnit 5.13.3

[Iris Clark]

On Mon, 7 Jul 2025 13:58:29 GMT, Christian Stein <cstein at openjdk.org> wrote:

> Please review this change to update jtreg to bundle JUnit 5.13.3 - instead of 5.13.2, which has some minor regressions. Find details at: https://docs.junit.org/5.13.3/release-notes/
> 
> Checksum `75af1fcbac5f10637d96c07555113b097f2eae4f` copied from here:
> - [junit-platform-console-standalone-1.13.3.jar.sha1](https://repo1.maven.org/maven2/org/junit/platform/junit-platform-console-standalone/1.13.3/junit-platform-console-standalone-1.13.3.jar.sha1)

Marked as reviewed by iris (Reviewer).

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PR Review: https://git.openjdk.org/jtreg/pull/272#pullrequestreview-2994463031