Updating Github actions to use Python 3.11

Author: mphemming

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ '3.8' ]
+        python-version: [ '3.11' ]
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}
@@ -22,7 +22,6 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install "numpy<1.19.0"
         pip install -r test_requirements.txt
         pip install pytest-cov
     - name: Test with pytest