[Windows] Add Nightly swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-07-a

Author: swift-ci

_data/builds/swift-6_3-branch/windows10-arm64.yml

@@ -6,6 +6,10 @@
   dir: swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-07-a
   download: swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-07-a-windows10-arm64.exe
   name: Windows 10 Swift Development Snapshot
+- date: 2025-12-07 10:10:00-06:00
+  dir: swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-07-a
+  download: swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-07-a-windows10-arm64.exe
+  name: Windows 10 Swift Development Snapshot
 - date: 2025-12-05 10:10:00-06:00
   dir: swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-05-a
   download: swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-05-a-windows10-arm64.exe

_data/builds/swift-6_3-branch/windows10.yml

@@ -6,6 +6,10 @@
   dir: swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-07-a
   download: swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-07-a-windows10.exe
   name: Windows 10 Swift Development Snapshot
+- date: 2025-12-07 10:10:00-06:00
+  dir: swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-07-a
+  download: swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-07-a-windows10.exe
+  name: Windows 10 Swift Development Snapshot
 - date: 2025-12-05 10:10:00-06:00
   dir: swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-05-a
   download: swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-05-a-windows10.exe