Fix pylint workflow

Author: davevelasco

.github/workflows/pylint.yml

@@ -14,14 +14,20 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Set up Python 3.8
+    - name: Set up Python 3.9.5
       uses: actions/setup-python@v1
       with:
-        python-version: 3.8
+        python-version: 3.9.5
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
         pip install pylint
     - name: Analysing the code with pylint
       run: |
-        pylint `ls -R|grep .py$|xargs`
+        pylint --fail-under=10 `find -regextype egrep -regex '(.*.py)$'`
+        | tee pylint.txt
+    - name: Upload pylint.txt as artifact
+      uses: actions/upload-artifact@v2
+      with:
+        name: pylint report
+        path: pylint.txt