Do not skip dot-files or dot-folders

[tmaier]

I have soem dot-folders with yaml files. (e.g., .gitlab, .devcontainer, .rubocop.yml)

They are ignored with $ yaml-lint -i .

$ ls -a  | grep ".yml"
docker-compose.yml
.gitlab-ci.yml
.rubocop_new_cops.yml
.rubocop_todo.yml
.rubocop.yml

$ yaml-lint -i . | grep ".yml"
File : ./docker-compose.yml, Syntax OK