The PreBuildEvent commands in wren.vcxproj for Release|Win32, Release|x64, and Debug|x64 configurations are updated to use the new `update_deps.py` script for dependency management and `build_libuv.py` for building, replacing the previous `libuv.py download` and `libuv.py build` invocations.
The build_libuv_windows function in util/build_libuv.py now appends "vs2017" to the vcbuild.bat arguments, ensuring the build targets Visual Studio 2017 instead of relying on the default compiler detection.