improving linting

.yamllint

@@ -0,0 +1,8 @@
+---
+extends: default
+
+rules:
+  # 150 chars should be enough, but don't fail if a line is longer
+  line-length:
+    max: 150
+    level: warning

tasks/versioncheck.yml

@@ -7,7 +7,7 @@
   ansible.builtin.file:
     path: '/etc/.ansible-version'
     state: directory
-    mode: 0755
+    mode: "0755"
   when: submodules_versioncheck | bool
 
 - name: Check playbook version