Update install script to include python3-venv

[managedkaos]

Issue Overview

The library for python3-venv needs to be installed.

Describe your environment

• Ubuntu 22.04
• Python 3.10.12

Steps to Reproduce

...

Expected Behavior

virtual environment should be created

Current Behavior

The virtual environment was not created successfully because ensurepip is not
available.  On Debian/Ubuntu systems, you need to install the python3-venv
package using the following command.

    apt install python3.10-venv

You may need to use sudo with that command.  After installing the python3-venv
package, recreate your virtual environment.

Possible Solution

Install python3-venv with apt install python3-venv in the automated installation script.

[marcusrodello]

great, thanks