Apply suggestion from @chalmerlowe

Author: chalmerlowe

.github/workflows/test_suite.yml

@@ -100,7 +100,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.13", "3.14"]
+        python-version: ["3.13"]
     services:
       emulator-0:
         image: gcr.io/cloud-spanner-emulator/emulator