Bump actions/upload-artifact action to v6

| datasource  | package                 | from   | to     |
| ----------- | ----------------------- | ------ | ------ |
| github-tags | actions/upload-artifact | v5.0.0 | v6.0.0 |


Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/benchmark.yml

@@ -46,7 +46,7 @@ jobs:
       run: ./benchmark.ps1
 
     - name: Publish BenchmarkDotNet artifacts
-      uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
+      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
       if: ${{ !cancelled() }}
       with:
         name: artifacts