Downgrade cibuildwheel to 2.19.2

It was failing to detect the version

Author: maresb

.github/workflows/pypi.yml

@@ -50,7 +50,7 @@ jobs:
           fetch-depth: 0
 
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.21.0
+        uses: pypa/cibuildwheel@v2.19.2
 
       - uses: actions/upload-artifact@v4
         with: