Fix CI build

Author: kzhdev

.github/workflows/ci.yml

@@ -64,7 +64,7 @@ jobs:
         ${{ github.workspace }}/vcpkg/vcpkg install boost-asio boost-beast boost-context boost-system openssl nlohmann-json gtest
 
     - name: Configure CMake
-      run: cmake -B build -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} -DCMAKE_TOOLCHAIN_FILE=${{ github.workspace }}/vcpkg/scripts/buildsystems/vcpkg.cmake
+      run: cmake -B build -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} -DCMAKE_TOOLCHAIN_FILE=${{ github.workspace }}/vcpkg/scripts/buildsystems/vcpkg.cmake -DCMAKE_PREFIX_PATH="${{ github.workspace }}/vcpkg/installed/${{ matrix.triplet }}"
 
     - name: Build
       run: cmake --build build --config ${{ matrix.build_type }}