Update to Onboarding Tutorial

Dev Kit Support
1

When trying to install the pyserial package on macOS using the command python3 -m pip install -U pyserial I got error: externally-managed-environment. Why? macOS’s updated Python environment restrictions (PEP 668), prevent global package installations to protect system-managed Python environments. There are three possible resolutions:

  1. pipx (detailed below)
  2. virtual environment - what I did: python3 -m venv pyserial_env \ source pyserial_env/bin/activate \ python3 -m serial```
  3. Bypass restrictions - not super advisable, as the new restrictions make sense: python3 -m pip install pyserial --break-system-packages

I’d recommend updating the tutorial :

Installing Python miniterm on macOS using pipx

A. Install Homebrew (if not already installed):
Open Terminal and run:

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)" 

B. **Install pySerial using pipx:**
```pipx install pyserial```

C. **Install pySerial using pipx:**
```pipx install pyserial```

D. **Run miniterm:**
```python3 -m serial```