use different vcpkg root environment variable

Author: zerotacg

.github/workflows/build-client-vcpkg.yml

@@ -116,7 +116,7 @@ jobs:
       run: >
         cmake --preset ${{ matrix.cmake_preset }}
         ${{ matrix.cmake_options }}
-        -DCMAKE_TOOLCHAIN_FILE=$VCPKG_ROOT/scripts/buildsystems/vcpkg.cmake
+        -DCMAKE_TOOLCHAIN_FILE=$VCPKG_INSTALLATION_ROOT/scripts/buildsystems/vcpkg.cmake
         -DVCPKG_INSTALLED_DIR=${{ steps.strings.outputs.vcpkg-dir }}
         -S ${{ github.workspace }}