CI: modify vcpkg.yml

Author: KangLin

.github/workflows/vcpkg.yml

@@ -24,6 +24,7 @@ jobs:
       VCPKG_INSTALLED_DIR: ${{github.workspace}}\.cache\install
       VCPKG_DEFAULT_BUILDTREES_ROOT: D:/bt
       VCPKG_DEFAULT_BINARY_CACHE: D:/bc
+      VCPKG_BINARY_SOURCES: "clear;x-buildtrees-root,c:/v"
       RabbitRemoteControl_VERSION: v0.0.36
       BUILD_DIR:   ${{github.workspace}}\build
       SOURCE_DIR:  ${{github.workspace}}\.cache\source
@@ -104,7 +105,7 @@ jobs:
             -DCMAKE_TOOLCHAIN_FILE=${{env.VCPKG_ROOT}}/scripts/buildsystems/vcpkg.cmake `
             -DVCPKG_MANIFEST_FEATURES=${{env.VCPKG_MANIFEST_FEATURES}} `
             -DVCPKG_VERBOSE=ON `
-            -DVCPKG_TARGET_TRIPLET=${{matrix.VCPKG_TARGET_TRIPLET}} `
+            -DVCPKG_TARGET_TRIPLET="${{matrix.VCPKG_TARGET_TRIPLET}}" `
             -DX_VCPKG_APPLOCAL_DEPS_INSTALL=ON `
             -DVCPKG_APPLOCAL_DEPS=ON `
             -DVCPKG_TRACE_FIND_PACKAGE=ON `