ci(GHA): Downgrade Windows image to 2022

This might resolve occasional test failures reported in
#709

These might be related to the Windows 2025 image. Note that GitHub
actions still tags Windows 2022 as 'latest', so it should be safe to
revert to that.

Author: RandomByte

.github/workflows/test.yml

@@ -18,7 +18,7 @@ jobs:
       fail-fast: false # Do not stop other jobs if one fails
       matrix:
         version: [20, 22, 24]
-        os: [ubuntu-24.04, windows-2025, macos-15]
+        os: [ubuntu-24.04, windows-2022, macos-15]
     runs-on: ${{ matrix.os }}
     steps: