`frizbee actions` should update composite actions by default too

Describe the issue

Hi there!

I ran frizbee actions on a repository and, as expected, it modified all of my workflows to use hash-pinned references where possible. Awesome!

However, I also had a composite action definition (i.e. an action.yml) in the same directory, and frizbee actions did not modify my action's uses: clauses.

Expected behavior

I expected frizbee actions to rewrite both .github/workflows/*.ya?ml and **/action.yml.

Actual behavior

I had to explicitly run frizbee actions action.yml to get it to modify the composite action stored in the same repository.

To Reproduce

Create a repository containing both workflows and composite action definitions. Run frizbee actions, and observe that the former are updated while the latter are not.

What version are you using?

v0.1.7

Start at the frizbee actions command and trace how it discovers .github/workflows/*.ya?ml and **/action.yml files. Reproduce the behavior with both workflow and composite action definitions, then verify that running without an explicit path updates both kinds of files while preserving the existing workflow behavior.