fix: Steps shouldn't need quotes

[spydon]

Is there an existing issue for this?

• [X] I have searched the existing issues.

Version

6.2.0

Description

When using steps on in says that each steps need to have quotes, for this script for example, we're getting:

melos.yaml: The index 0 at scripts/doc-setup is expected to be a String but got {echo Checking python version: null}

Steps to reproduce

Don't use quotes in a steps script (only tried on linux).

Expected behavior

It should work like described in the docs, without quotes: https://melos.invertase.dev/configuration/scripts#steps

Screenshots

No response

Additional context and comments

Discovered in: https://github.com/flame-engine/flame/pull/3336