Update Python versions in CI/CD pipeline (#62)

Author: espdev

.github/workflows/main.yaml

@@ -16,7 +16,7 @@ jobs:
           - ubuntu-latest
           - macos-latest
           - windows-latest
-        python-version: [ "3.6", "3.7", "3.8", "3.9" ]  # "3.10" -- currently disabled
+        python-version: [ "3.7", "3.8", "3.9", "3.10", "3.11" ]
 
     steps:
       - uses: actions/checkout@v2
@@ -35,13 +35,13 @@ jobs:
         run: pytest --color=yes --cov=csaps --cov-report=term
 
       - name: Coveralls
-        if: ${{ matrix.platform == 'ubuntu-latest' && matrix.python-version == '3.9' }}
+        if: ${{ matrix.platform == 'ubuntu-latest' && matrix.python-version == '3.11' }}
         uses: AndreMiras/coveralls-python-action@develop
         with:
           parallel: false
 
       - name: flake8 Static Analysis
-        if: ${{ matrix.platform == 'ubuntu-latest' && matrix.python-version == '3.9' }}
+        if: ${{ matrix.platform == 'ubuntu-latest' && matrix.python-version == '3.11' }}
         run: flake8 csaps/ tests/ setup.py
 
   docs:
@@ -51,7 +51,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
         with:
-          python-version: 3.9
+          python-version: "3.11"
 
       - name: Install dependencies
         run: |