Update cibuildwheel to the latest version (#1711)

This PR updates cibuildwheel to the latest version, so that we can build Python 3.11 wheels when the time comes.

Author: mdickinson

.github/workflows/release-to-pypi.yml

@@ -35,7 +35,7 @@ jobs:
         python -m pip install twine wheel
 
     - name: Build wheels
-      uses: pypa/cibuildwheel@v2.1.2
+      uses: pypa/cibuildwheel@v2.9.0
       env:
         CIBW_SKIP: 'pp*'
         CIBW_ARCHS_LINUX: "auto aarch64"