RFR: 7904097: Use asm 9.9 in order to support JDK 26

[Evgeny Nikitin]

Simple bumping up of the asm version. Testing: local, coverage gathering in both agent and separate app modes.

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Commit messages:
 - 7904097: Use asm 9.9 in order to support JDK 26

Changes: https://git.openjdk.org/jcov/pull/66/files
  Webrev: https://webrevs.openjdk.org/?repo=jcov&pr=66&range=00
  Issue: https://bugs.openjdk.org/browse/CODETOOLS-7904097
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jcov/pull/66.diff
  Fetch: git fetch https://git.openjdk.org/jcov.git pull/66/head:pull/66

PR: https://git.openjdk.org/jcov/pull/66