RFR: 7904120: Update jcheck configuration to allow more tags

[Nizar Benalla]

On Wed, 10 Dec 2025 16:36:26 GMT, Nizar Benalla <nbenalla at openjdk.org> wrote:

> Please review this PR to allow the use of release tags such as `jextract-25+4`

The number 39 is arbitrary, just an upper bound to avoid an unbounded regex. I wanted to cover a range of releases in the near future.

Thanks for the reviews!

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PR Comment: https://git.openjdk.org/jextract/pull/298#issuecomment-3646507733