Update vendored windows-terminal

Author: DRSDavidSoft

vendor/sources.json

@@ -14,6 +14,11 @@
     "version": "23.07.24",
     "url": "https://github.com/ConEmu/ConEmu/releases/download/v23.07.24/ConEmuPack.230724.7z"
   },
+  {
+    "name": "windows-terminal",
+    "version": "1.23.12811.0",
+    "url": "https://github.com/microsoft/terminal/releases/download/v1.23.12811.0/Microsoft.WindowsTerminal_1.23.12811.0_x64.zip"
+  },
   {
     "name": "clink-completions",
     "version": "0.6.6",