Update grommet-icons version

[jcfilben]

What does this PR do?

Bumps grommet-icons version to 1.2.0

What are the relevant issues?

Where should the reviewer start?

How should this be manually tested?

Any background context you want to provide?

Screenshots (if appropriate)

Should this PR be mentioned in Design System updates?

Is this change backwards compatible or is it a breaking change?

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[changeset-bot]

⚠️ No Changeset found

Latest commit: 32462cf

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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