CI: windows-2019 runner was retired, move to windows-2022

The windows-latest runner is moving to windows-2025 during September
2025.

Author: rgommers

.github/workflows/ci.yml

@@ -22,7 +22,7 @@ jobs:
       matrix:
         python-version: ["3.10", "3.14-dev", "3.14t-dev"]
         architecture: [x86, x64]
-        os: [windows-latest, windows-2019]
+        os: [windows-latest, windows-2022]
     steps:
       - uses: actions/checkout@v4
       - uses: ./.github/bottleneck-action