fix typo

Author: aromanielloNTIA

.github/workflows/buildwheels.yml

@@ -43,7 +43,7 @@ jobs:
         run: cd wrap/python
 
       - name: Install cibuildwheel
-        run: python -m pip install cibuildwheel=2.19.2
+        run: python -m pip install cibuildwheel==2.19.2
         working-directory: wrap/python
 
       - name: Build wheels