Update dependency concurrently to v6.2.1

[ScriptedAlchemy]

This PR contains the following updates:

Package	Type	Update	Change
concurrently	devDependencies	patch	6.2.0 -> 6.2.1

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Release Notes

open-cli-tools/concurrently

### [`v6.2.1`](https://togithub.com/open-cli-tools/concurrently/releases/v6.2.1) [Compare Source](https://togithub.com/open-cli-tools/concurrently/compare/v6.2.0...v6.2.1) - **Fix hanging issue after using programmatic API to read from stdin** ([#​252](https://togithub.com/open-cli-tools/concurrently/issues/252), [#​253](https://togithub.com/open-cli-tools/concurrently/issues/253)) Big kudos to [@​brandonchinn178](https://togithub.com/brandonchinn178) for finding and fixing this! 🏆 🎉 - Correctly reexport flow controllers ([#​278](https://togithub.com/open-cli-tools/concurrently/issues/278))

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