Bump actions/upload-artifact from 4.6.1 to 6.0.0

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4.6.1 to 6.0.0.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4.6.1...v6.0.0)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/resyntax-analyze.yml

@@ -48,7 +48,7 @@ jobs:
       - name: Analyze changed files
         run: xvfb-run racket -l- resyntax/cli analyze --local-git-repository . "origin/${GITHUB_BASE_REF}" --output-as-github-review --output-to-file ./resyntax-review.json
       - name: Upload analysis artifact
-        uses: actions/upload-artifact@v4.6.1
+        uses: actions/upload-artifact@v6.0.0
         with:
           name: resyntax-review
           path: resyntax-review.json