Squawk action can handle globbing of files (#8)

When a glob is passed that targets multiple files, bash is
expanding the wildcard before compgen is run, resulting in only
one file getting passed to squwak. Quoting prevents bash from trying
to expand the glob early.

action.yml

@@ -29,5 +29,5 @@ runs:
         export SQUAWK_GITHUB_REPO_OWNER=$(jq --raw-output .repository.owner.login "$GITHUB_EVENT_PATH")
         export SQUAWK_GITHUB_REPO_NAME=$(jq --raw-output .repository.name "$GITHUB_EVENT_PATH")
         export SQUAWK_GITHUB_PR_NUMBER=$(jq --raw-output .pull_request.number "$GITHUB_EVENT_PATH")
-        squawk --verbose upload-to-github $(compgen -G ${{inputs.pattern}})
+        squawk --verbose upload-to-github $(compgen -G "${{inputs.pattern}}")
       shell: bash