fix(sandbox): correct uv version check command in install script

uv pip --version is not a valid uv subcommand; the correct command
to verify the uv installation is uv --version.

Author: crallen

build/scripts/install-python.sh

@@ -14,4 +14,4 @@ uv python install "$PYTHON_VERSION" --default
 uv cache clean
 
 python --version
-uv pip --version
+uv --version