Use Ubuntu 20.04 image to run CI

Author: FantasyTeddy

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ name: CI
 jobs:
   scripts:
     name: Scripts
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         include:
@@ -31,7 +31,7 @@ jobs:
 
   playbooks:
     name: Playbooks
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         include:

.github/workflows/molecule-ci.yml

@@ -10,7 +10,7 @@ jobs:
 
   test:
     name: Molecule
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         distro: