build(deps): bump actions/upload-artifact from 5 to 6

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/release.yml

@@ -27,7 +27,7 @@ jobs:
           cd .. && tar -czvf croc_${{ github.event.release.name }}_src.tar.gz croc-${{ github.event.release.name }}
 
       - name: Upload source artifact
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: source-tarball
           path: "*.tar.gz"
@@ -187,7 +187,7 @@ jobs:
           fi
 
       - name: Upload build artifact
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: build-${{ matrix.name }}
           path: |