ansible-lint: updated to 6.20.2

v6.20.2

Bugfixes

Do not use github action path for running ansible lint
Correct listing of autofix rules in documentation
Make the autofix rule list dynamic in documentation
Fix documentation links to autofix page
Bump test dependencies
Correct documentation regarding CLI argument precedence
Document autofix ability for rules that supports it
Accept underline prefix when checking var-naming
Correct regression with use of --fix

(adam)