only run py310

Author: Nissan Pow

.github/workflows/metaflow.s3_tests.yml

@@ -20,7 +20,7 @@ jobs:
     strategy:
       matrix:
         os: [macos-latest, ubuntu-20.04]
-        ver: ['3.8', '3.9', '3.10', '3.11', '3.12']
+        ver: ['3.10']
 
     steps:
     - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2.7.0