Update cibuildwheel to version 2.21.2 in build workflows

Author: PierreRaybaut

.github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Build wheels
-        run: pipx run cibuildwheel==2.20.0
+        run: pipx run cibuildwheel==2.21.2
 
       - uses: actions/upload-artifact@v4
         with:

.github/workflows/build_deploy.yml

@@ -19,7 +19,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.20.0
+        uses: pypa/cibuildwheel@v2.21.2
 
       - uses: actions/upload-artifact@v4
         with: