.pre-commit-config.yaml is not valid yaml

[konstruktoid]

https://github.com/konstruktoid/ansible-role-hardening/pull/456/files#diff-63a9c44a44acf85fea213a857769990937107cf072831e1a26808cfde9d096b9

$ yamllint .pre-commit-config.yaml
.pre-commit-config.yaml
  1:1       warning  missing document start "---"  (document-start)
  2:1       error    wrong indentation: expected at least 1  (indentation)
  5:3       error    wrong indentation: expected at least 3  (indentation)
  9:3       error    wrong indentation: expected at least 3  (indentation)
  13:3      error    wrong indentation: expected at least 3  (indentation)