build(windows): Downgrade to mingw 11.2.0 (#2757)

This change significantly slows down the Windows build, but it's the only way I've found to fix the failures we're seeing.

.github/workflows/ci.yml

@@ -10,6 +10,8 @@ jobs:
     runs-on: windows-latest
     steps:
     - uses: actions/checkout@v4
+    # wasmtime can't be built with 12.2
+    - run: choco install mingw --version 11.2.0.07112021 --allow-downgrade
     - uses: actions/setup-go@v4
       with:
         go-version: '1.21.1'