Switched to python 3.6 as minimum version, and remove paths condition on PR trigger

.github/workflows/cli_setup.yml

@@ -5,14 +5,6 @@ on:
     branches:
     - master
   pull_request:
-    paths:
-    - 'qmk_cli/**'
-    - 'milc.py'
-    - 'qmk'
-    - 'requirements.txt'
-    - '.github/workflows/setup_and_doctor.yml'
-    - 'setup.cfg'
-    - 'setup.py'
 
 jobs:
   test_cli_linux_macos:
@@ -22,7 +14,7 @@ jobs:
     strategy:
       matrix:
         os: [macos-latest, ubuntu-latest]
-        python-version: [3.5, 3.6, 3.7, 3.8]
+        python-version: [3.6, 3.7, 3.8]
 
     steps:
     - uses: actions/checkout@v1
@@ -51,7 +43,7 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        python-version: [3.5, 3.8]
+        python-version: [3.6, 3.8]
 
     steps:
     - uses: actions/checkout@v1