Update pylint in CI

Author: jepler

.github/workflows/githubci.yml

@@ -50,9 +50,9 @@ jobs:
     - name: Versions
       run: |
         python3 --version
-    - name: Pip install pylint, black, & Sphinx
+    - name: Pip install pylint
       run: |
-        pip install --force-reinstall pylint==1.9.2
+        pip install --force-reinstall pylint==2.7.1
     - name: Checkout Current Repo
       uses: actions/checkout@v2