Add builds for Python 3.11

Author: mwcraig

.github/workflows/build.yml

@@ -9,7 +9,7 @@ jobs:
       max-parallel: 4
       fail-fast: false
       matrix:
-        python-version: [3.8, 3.9, '3.10']
+        python-version: [3.8, 3.9, '3.10', 3.11]
         platform: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.platform }}
 
@@ -62,7 +62,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [cp37-cp37m, cp38-cp38, cp39-cp39, cp310-cp310]
+        python-version: [cp37-cp37m, cp38-cp38, cp39-cp39, cp310-cp310, cp311-cp311]
     runs-on: ubuntu-latest
     env:
       py: /opt/python/${{ matrix.python-version }}/bin/python