feat: add concurrently for prepare scripts

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Name	Status	Preview	Comments	Updated (UTC)
widgets	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 5, 2023 1:05pm

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:tada: This PR is included in version 2.52.0 :tada:

The release is available on:

• GitHub release
• npm package (@latest dist-tag)

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