[github] upgrade python to 3.10

Summary:
github CI fails with python frontend test changes because it's using
3.8.

Reviewed By: geralt-encore

Differential Revision:
D68651242

Privacy Context Container: L1208441

fbshipit-source-id: 996e3ef84dfc7c4c2158f9e1a72dc2dbfa746ece

.github/workflows/install.yml

@@ -83,7 +83,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.8'
+          python-version: '3.10'
 
       - name: Get OS version
         uses: sersoft-gmbh/os-version-action@v1