CI: Include Windows build in GHA.

Author: scoder

.github/workflows/ci.yml

@@ -142,8 +142,12 @@ jobs:
       matrix:
         #os: [macos-10.15, windows-latest]
         #os: [macos-10.15, macOS-M1]
-        os: [macos-11.0]
-        python_version: ["2.7", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]
+        os: [macos-11.0, windows-latest]
+        python_version: ["2.7", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12-dev"]
+
+        include:
+          - python_version: "3.12-dev"
+            allowed_failure: true
 
     runs-on: ${{ matrix.os }}
     env: { MACOSX_DEPLOYMENT_TARGET: 11.0 }
@@ -157,7 +161,9 @@ jobs:
         python-version: ${{ matrix.python_version }}
 
     - name: Install dependencies
-      run: python -m pip install -U pip setuptools wheel && python -m pip install --pre -r requirements.txt
+      run: |
+        python -m pip install -U pip setuptools wheel
+        python -m pip install --pre -r requirements.txt
 
     - name: Build wheels
       run: make sdist wheel