Summary:
Consolidate the five open ClientJS Dependabot updates into the internal source of truth.

Update `fast-uri` to 3.1.5 and `ws` to 8.21.1 for their security fixes. Also update `form-data` to 4.0.6, `babel/core` to 7.29.6, and `babel/plugin-transform-modules-systemjs` to 7.29.4, including the resolved Babel transitive dependencies.

GitHub PRs: #27, #34, #35, #37, #41

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Differential Revision: D120063889

fbshipit-source-id: c7d7403f383fa77b840d6702adb715f195c3f042