Update cloudinary-cli-test.yml

Fix python 3.6 version

Author: const-cloudinary

.github/workflows/cloudinary-cli-test.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.6.x", "3.7.x", "3.8.x", "3.9.x", "3.10.x", "3.11.x"]
+        python-version: ["3.6.15", "3.7.x", "3.8.x", "3.9.x", "3.10.x", "3.11.x"]
 
     steps:
     - uses: actions/checkout@v2