Remove windows-2019 from CI.

Author: alexrp

.github/workflows/build.yml

@@ -29,7 +29,6 @@ jobs:
           - ubuntu-24.04
           - ubuntu-24.04-arm
           - windows-11-arm
-          - windows-2019
           - windows-2022
           - windows-2025
     runs-on: ${{ matrix.os }}