CI: deprecate Python 3.6

Author: Wenzel

.github/workflows/ci.yml

@@ -30,7 +30,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python: ['3.6', '3.7', '3.8', '3.9']
+        python: ['3.7', '3.8', '3.9', '3.10', '3.11']
 
     steps:
       - uses: actions/checkout@v2
@@ -73,7 +73,7 @@ jobs:
     container: quay.io/pypa/manylinux_2_24_x86_64
     strategy:
       matrix:
-        python: ['3.6', '3.7', '3.8', '3.9']
+        python: ['3.7', '3.8', '3.9', '3.10', '3.11']
 
     steps:
       - uses: actions/checkout@v2