Bump vcpkg baseline again to fix issue with images not loading in debug builds

T'was likely this fix https://github.com/microsoft/vcpkg/pull/28137

.github/workflows/ci-main.yml

@@ -267,7 +267,7 @@ jobs:
           path: |
             D:/a/wesnoth/vcpkg
             D:/a/wesnoth/wesnoth/vcpkg_installed
-          key: win-cache-0009
+          key: win-cache-0010
 
       - name: Add msbuild to PATH
         uses: microsoft/setup-msbuild@v1.1.3

vcpkg.json

@@ -2,7 +2,7 @@
   "$schema": "https://raw.githubusercontent.com/microsoft/vcpkg-tool/main/docs/vcpkg.schema.json",
   "name": "wesnoth-dependencies",
   "version": "0.0.1",
-  "builtin-baseline": "62d01b70df227850b728f5050418b917ad6d2b32",
+  "builtin-baseline": "b6b5c0b9a44819b095b369f507599c79ac885ec5",
   "dependencies": [
     "sdl2",
     {