Update CI

.github/workflows/pelican-test.yaml

@@ -8,10 +8,10 @@ jobs:
     strategy:
       matrix:
         python-version:
-          - 3.6
-          - 3.7
           - 3.8
           - 3.9
+          - 3.10
+          - 3.11
     steps:
     - name: Checkout
       uses: actions/checkout@v2

.travis.yml

@@ -1,10 +0,0 @@
-language: python
-python:
-    - "3.6"
-    - "3.7"
-    - "3.8"
-install:
-    - pip install -r docs/requirements.txt
-script: pelican -s docs/pelicanconf.py
-notifications:
-    email: false