Update actions/upload-artifact action to v6 (#4)

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

Author: renovate[bot]

action.yml

@@ -132,7 +132,7 @@ runs:
 
     - name: Upload report artifacts
       if: ${{ steps.diff.outputs.has_changes == 'true' && (inputs.markdown != '' || inputs.json != '' || inputs.html != '' || inputs.text != '' || inputs.asciidoc != '') }}
-      uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
+      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6
       with:
         name: ${{ inputs.artifact-name }}
         if-no-files-found: ignore