Bump coursier/cache-action from 6 to 8 (#72)

Bumps [coursier/cache-action](https://github.com/coursier/cache-action) from 6 to 8.
- [Release notes](https://github.com/coursier/cache-action/releases)
- [Commits](coursier/cache-action@v6...v8)

---
updated-dependencies:
- dependency-name: coursier/cache-action
  dependency-version: '8'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/publish.yml

@@ -20,7 +20,7 @@ jobs:
 
       - name: Coursier Cache
         id: coursier-cache
-        uses: coursier/cache-action@v6
+        uses: coursier/cache-action@v8
 
       - name: Install Adoptium Temurin OpenJDK
         uses: coursier/setup-action@v3