Merge pull request #382 from data61/update_cibuildwheel

update cibuildwheel

Author: wilko77

.azurePipeline/cibuildwheel_steps.yml

@@ -2,7 +2,7 @@
 steps:
 - bash: |
     python3 -m pip install --upgrade pip
-    pip3 install cibuildwheel==1.4.2
+    pip3 install cibuildwheel==1.7.1
     cibuildwheel --print-build-identifiers
     cibuildwheel --output-dir wheelhouse .
   displayName: Build Wheel