Temporarily disable 'npm audit' on non-production dependencies

[jattasNI]

Pull Request

🤨 Rationale

Workaround for #581 to get the pipeline unblocked while we wait for beachball to publish a fix (or try out updating the transitive dependency on workspace-tools ourselves within this repo).

👩‍💻 Implementation

Comment out the steps which run npm audit in main.yml.

I thought we could get away with only disabling the non-production configuration of npm audit. But beachball (and by extension workspace-tools) is listed in peerDependencies of our beackball-lock-update package and it seems that audit includes those when running --only=prod.

🧪 Testing

Relying on pipeline.

✅ Checklist

• I have updated the project documentation to reflect my changes or determined no changes are needed.