Add release artifacts for ARM64 Windows

With #9266 Wasmtime should have full support for this platform. While
not tested in CI it can still be useful to build artifacts nonetheless
in case users are interested.

prtest:full

ci/build-build-matrix.js

@@ -64,6 +64,11 @@ const array = [
     "os": "ubuntu-latest",
     "target": "x86_64-unknown-linux-musl",
   },
+  {
+    "build": "aarch64-windows",
+    "os": "windows-latest",
+    "target": "aarch64-pc-windows-msvc",
+  },
 ];
 
 const builds = [];

ci/build-tarballs.sh

@@ -68,7 +68,8 @@ case $build in
     fi
     ;;
 
-  x86_64-mingw*)
+  # Skip the MSI for non-x86_64 builds of Windows
+  x86_64-mingw* | *-windows*)
     cp target/$target/release/wasmtime.exe tmp/$bin_pkgname/wasmtime$min.exe
     fmt=zip
     ;;