yml formatting not respected

Rationale

Adding on #1 (closed) and #12 (closed) i'd like to raise the issue of messed up formatting, basically indentation, again. the used library seems to be the only one i have ever seen to put the indentation after the dashes which seems to be a direct violation of the yaml spec This results in annoying behavior, where I need to reformat the file after each library update of the pre-commit-config. Maybe switching to pyyaml or an other library could solve this problem

Type (select one)

• Bug
• Feature request
• Suggestion

Pre-submit criteria

• No similar issue/feature request/suggestion exists