Remove Python 3.6 support

.github/workflows/run_testsuite.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-18.04
     strategy:
       matrix:
-        python-version: [ '3.6', '3.7', '3.8', '3.9', '3.10' ]
+        python-version: [ '3.7', '3.8', '3.9', '3.10' ]
     name: Python ${{ matrix.python-version }}
     steps:
       - uses: actions/checkout@v2

.travis.yml

@@ -1,7 +1,6 @@
 dist: bionic
 language: python
 python:
-  - "3.6"
   - "3.7"
   - "3.8"
   - "3.9"

setup.py

@@ -6,8 +6,8 @@ from setuptools import setup
 
 from lutris import __version__ as VERSION
 
-if sys.version_info < (3, 6):
-    sys.exit('Python >= 3.6 is required to run Lutris')
+if sys.version_info < (3, 7):
+    sys.exit('Python >= 3.7 is required to run Lutris')
 
 data_files = []