ci: switch back to windows-latest

Prefer staying on the floating tag — accept GitHub's auto-redirect to
windows-2025-vs2026 in mid-2026 rather than pin and chase.

.github/workflows/release.yml

@@ -14,10 +14,7 @@ permissions:
 
 jobs:
   build:
-    # Pinned explicitly: `windows-latest` is being redirected to a newer image
+    runs-on: windows-latest
-    # by GitHub in mid-2026 — pin the current Windows Server 2025 image so
-    # release behavior is deterministic across that transition.
-    runs-on: windows-2025
     steps:
       - uses: actions/checkout@v6
         with: