use ansible-lint 4.2.0 for ansible 2.7

ansible-lint 4.3.7 depends on ansible>=2.8

Author: vitabaks

.github/workflows/ansible-lint.yml

@@ -60,7 +60,7 @@ jobs:
             add_balancer.yml
           override-deps: |
             ansible==2.7.18
-            ansible-lint==4.3.7
+            ansible-lint==4.2.0
           args: "-x 106,208,403"
 
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