Update actions/upload-artifact digest to c6a366c

Author: renovate[bot]

.github/workflows/ci.yml

@@ -55,7 +55,7 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
 
       - name: Publish Test Results
-        uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce # v3
+        uses: actions/upload-artifact@c6a366c94c3e0affe28c06c8df20a878f24da3cf # v3
         if: always()
         with:
           name: test-results