RFR: 7904120: Update jcheck configuration to allow more tags

[Nizar Benalla]

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

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Commit messages:
 - permit more tags

Changes: https://git.openjdk.org/jextract/pull/298/files
  Webrev: https://webrevs.openjdk.org/?repo=jextract&pr=298&range=00
  Issue: https://bugs.openjdk.org/browse/CODETOOLS-7904120
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jextract/pull/298.diff
  Fetch: git fetch https://git.openjdk.org/jextract.git pull/298/head:pull/298

PR: https://git.openjdk.org/jextract/pull/298