Upgrade Windows builder to windows-2025 (#10290)

This is an attempt to address #10289 and unblock the upgrade of Wasmtime
in the wasmtime-go bindings. Honestly I'm lost in the number of MinGW
bugs we're dodging at this point. Regardless though this is something
that will need to be done at some point anyway and theoretically
shouldn't cause any other regressions, so I figured I might as well go
ahead and do this and hopefully fix some MinGW issues while I'm at it.

ci/build-build-matrix.js

@@ -5,7 +5,7 @@
 // targets/platforms once and then duplicate them all with a "min" build.
 
 const ubuntu = 'ubuntu-24.04';
-const windows = 'windows-2022';
+const windows = 'windows-2025';
 const macos = 'macos-14';
 
 const array = [

ci/build-test-matrix.js

@@ -16,7 +16,7 @@ const GENERIC_BUCKETS = 3;
 const SINGLE_CRATE_BUCKETS = ["wasmtime", "wasmtime-cli", "wasmtime-wasi"];
 
 const ubuntu = 'ubuntu-24.04';
-const windows = 'windows-2022';
+const windows = 'windows-2025';
 const macos = 'macos-14';
 
 // This is the small, fast-to-execute matrix we use for PRs before they enter