Update references to the Sandbox:

[jacobweinstock]

Description

The Sandbox has been renamed to the Playground.

Why is this needed

Fixes: #

How Has This Been Tested?

How are existing users impacted? What migration steps/scripts do we need?

Checklist:

I have:

• [ ] updated the documentation and/or roadmap (if required)
• [ ] added unit or e2e tests
• [ ] provided instructions on how to upgrade

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[jacobweinstock]

@mergifyio queue

[mergify[bot]]

queue

✅ The pull request has been merged automatically

The pull request has been merged automatically at *7babcab66f927e5a0a1323731bf1efc77c33be28*