CI: add stable-2.13 (#95)

* update ansible and python versions

* remove python 3.6 from molecule test

* revert

* try only python 3

* molecule testing only stable >= 2.11

* revert

* try

* add proxysql version for python 3.8

* cleanup

Author: markuman

.github/workflows/ansible-test-plugins.yml

@@ -28,6 +28,7 @@ jobs:
           - stable-2.10
           - stable-2.11
           - stable-2.12
+          - stable-2.13
           - devel
     steps:
 
@@ -61,9 +62,18 @@ jobs:
           - stable-2.10
           - stable-2.11
           - stable-2.12
+          - stable-2.13
           - devel
         python:
           - 3.6
+        include:
+          - python: "3.8"
+            ansible: "stable-2.12"
+            proxysql: 2.3.2
+          - python: "3.8"
+            ansible: "stable-2.13"
+            proxysql: 2.3.2
+
     steps:
 
       - name: Check out code