build arm64 wheels on windows

Author: wjakob

pyproject.toml

@@ -1,5 +1,6 @@
 [build-system]
-requires = ["scikit-build-core >=0.4.3", "nanobind >=1.3.2"]
+requires = ["scikit-build-core >=0.4.3",
+    "nanobind @ git+https://github.com/wjakob/nanobind@master"]
 build-backend = "scikit_build_core.build"
 
 [project]
@@ -40,6 +41,9 @@ test-requires = "pytest"
 # Don't test Python 3.8 wheels on macOS/arm64
 test-skip="cp38-macosx_*:arm64"
 
+[tool.cibuildwheel.windows]
+archs = ["x86", "AMD64", "ARM64"]
+
 # Needed for full C++17 support
 [tool.cibuildwheel.macos.environment]
 MACOSX_DEPLOYMENT_TARGET = "10.14"