put versions in quotes (#1572)

.github/workflows/dependencies.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.5, 3.6, 3.7, 3.8.3, 3.9, 3.10]
+        python-version: ["3.5", "3.6", "3.7", "3.8.3", "3.9", "3.10"]
         redis-version: [3, 4, 5, 6]
         redis-py-version: [3.5.0]
 
@@ -49,7 +49,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: [3.5, 3.6, 3.7, 3.8.3, 3.9, 3.10]
+        python-version: ["3.5", "3.6", "3.7", "3.8.3", "3.9", "3.10"]
         redis-version: [3, 4, 5, 6]
 
     steps:

.github/workflows/workflow.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.5, 3.6, 3.7, 3.8.3, 3.9, 3.10]
+        python-version: ["3.5", "3.6", "3.7", "3.8.3", "3.9", "3.10"]
         redis-version: [3, 4, 5, 6]
         redis-py-version: [3.5.0]