fix(ci): pylint.yml (#1108)

ref: #636. `pylint` command does not work

I've had success running the modified command [here](https://github.com/thecesrom/incendium/blob/project/.github/workflows/pylint.yml).

Co-authored-by: Josh Gross <joshmgross@github.com>

ci/pylint.yml

@@ -20,4 +20,4 @@ jobs:
         pip install pylint
     - name: Analysing the code with pylint
       run: |
-        pylint `ls -R|grep .py$|xargs`
+        pylint $(git ls-files '*.py')