fix(ci): use python 3.10 on bench workflow (#5550)

.github/workflows/bench.yml

@@ -39,7 +39,7 @@ jobs:
       - name: setup python
         uses: actions/setup-python@v2
         with:
-          python-version: '3.x'
+          python-version: '3.10'
           architecture: x64
 
       - name: install dependencies