Bump jcstress-core from 0.7 to 0.8
Bump jcstress-core from 0.7 to 0.8

Bumps [jcstress-core](https://github.com/openjdk/jcstress) from 0.7 to 0.8.
- [Release notes](https://github.com/openjdk/jcstress/releases)
- [Commits](https://github.com/openjdk/jcstress/compare/0.7...0.8)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
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