ci: pin Windows runner to VS 2022

Signed-off-by: Esteve Fernandez <esteve@apache.org>

Author: esteve

.github/workflows/rust-win.yml

@@ -16,7 +16,8 @@ env:
 
 jobs:
   build:
-    runs-on: windows-latest
+    # NOTE(esteve): Pin to the VS 2022 image until the Windows ROS build tooling supports VS 18.
+    runs-on: windows-2022
     steps:
       - uses: actions/checkout@v4