ci: test on Windows 2022 and 2025

Author: thieman

.github/workflows/ci.yml

@@ -32,8 +32,12 @@ jobs:
         run: make check-licenses
 
   test:
-    name: Test
-    runs-on: windows-2022
+    name: Test (${{ matrix.runner }})
+    runs-on: ${{ matrix.runner }}
+    strategy:
+      fail-fast: false
+      matrix:
+        runner: [windows-2022, windows-2025]
     steps:
       - name: Check out repository
         uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4