[CI] windows-2019 runner has been retired, use windows-latest (i.e 2025) instead.

Author: Jarod42

.github/workflows/premake5-qt-windows-msvc-2019.yml

@@ -28,7 +28,7 @@ on:
 
 jobs:
   windows:
-    runs-on: windows-2019
+    runs-on: windows-latest
 
     strategy:
       fail-fast: false

.github/workflows/premake5-windows-msvc-2019.yml

@@ -28,7 +28,7 @@ on:
 
 jobs:
   windows:
-    runs-on: windows-2019
+    runs-on: windows-latest
 
     steps:
     - name: Checkout