Pushd/popd in venv creation

Author: Tom-Willemsen

installation_and_upgrade/set_up_venv.bat

@@ -1,8 +1,10 @@
 REM sets up temporary virtual environment for deployment and installs requirements.
 
+pushd "c:\Instrument\var\tmp"
 set UV_TEMP_VENV=C:\Instrument\Var\tmp\.deployscriptvenv
 set UV_PYTHON=3.12
 REM use the on-disk location as we'll be using a venv anyway so it won't dirty the install
 uv venv "%UV_TEMP_VENV%"
 call "%UV_TEMP_VENV%\scripts\activate"
 uv pip install -r "%~dp0\requirements.txt" --no-build
+popd