Merge pull request #3086 from UlisesGascon/fix/python2.x-in-github-actions

fix: Anchored ubuntu version to support Python 2.7 in Github Actions

Author: UlisesGascon

.github/workflows/push.yml

@@ -2,7 +2,7 @@ name: Lint
 on: [push, pull_request]
 jobs:
   Python:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       max-parallel: 2
       matrix: