chore: update typo PR script

[TomAFrench]

Description

Problem*

Resolves

Summary*

This PR updates the typo PR script to squash the commits as multi-commit PRs weren't being processed properly.

Additional Context

Documentation*

Check one:

• No documentation needed.
• Documentation included in this PR.
• [For Experimental Features] Documentation to be submitted in a separate PR.

PR Checklist*

• I have tested the changes locally.
• I have formatted the changes with Prettier and/or cargo fmt on default settings.