Revert checkout version from d416e02

Plus add changes from
os-autoinst#67 for testing.

Signed-off-by: Ioannis Bonatakis <[email protected]>

Author: d3flex

.github/workflows/tox.yml

@@ -11,7 +11,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - "3.6"
           - "3.8"
           - "3.9"
           - "3.10"
@@ -21,10 +20,9 @@ jobs:
         include:
           - os: "ubuntu-latest"
           - os: "ubuntu-20.04"
-            python-version: "3.6"
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Set up Python ${{ matrix.python-version }}