fix(checkbox): [EMU-4092] update vertical padding

[a-maffei]

What this PR does

1. Updates the bordered checkbox component's vertical padding (from 8px to 12px)
2. This change is also reflected on the CSS radio button component since it also uses the p-label--bordered class.

Current:

Updated:

Why is this needed?

Solves:
EMU-4092

Checklist:

• I reviewed my own code
• The changes align with the designs I received
  Or give a reason why this does not apply:
• I have attached screenshot(s), video(s) or gif(s) showing that the solution is working as expected
  Or give a reason why this does not apply:
• I have updated the task(s) status on Linear
• All new media is optimized (images, gifs, videos)

Browser support

My code works in the following browsers:

• Firefox
• Chrome
• Safari
• Edge

[diogomateus]

✅

[talo242]

💅🏼