Non-yaml checks running on yaml files

[nickgw]

Describe the Bug

Checks for puppet files are also being executed on yaml files. This especially happens with yaml with anchors and aliases:

[root@08f8f7ae7287 puppet]# puppet-lint hieradata/facts/env/prod/role/unbound.yaml
ERROR: Syntax error on line 3 (check: syntax)

  zone.consul.contoso.com: &consulDNS
                                 ^

Try running `puppet parser validate <file>`

Expected Behavior

Only yaml compatible checks should run on yaml files.

Steps to Reproduce

Run puppet-lint on yaml files.

Additional Context

Looks like the issue may have been introduced here: https://github.com/puppetlabs/puppet-lint/pull/235/files

[tokenrove]

I believe my PR #239 fixed this a while back. I've kind of been expecting the maintainers to make a bug fix release containing it but time keeps on passing... @david22swan sorry to ping you on this but is there any chance we could get a new release with this fix in? I keep encountering repos where we're pulling in the latest released puppet-lint which are broken by this.