Update ci-testing.yml benchmarks to Python 3.10 (#10997)

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

.github/workflows/ci-testing.yml

@@ -18,7 +18,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-latest ]
-        python-version: [ '3.9' ]  # requires python<=3.9
+        python-version: [ '3.10' ]  # requires python<=3.10
         model: [ yolov5n ]
     steps:
       - uses: actions/checkout@v3