Update dependency axios to v0.21.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
axios (source)	0.21.2 -> 0.21.4

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Release Notes

axios/axios

### [`v0.21.4`](https://togithub.com/axios/axios/blob/master/CHANGELOG.md#​0214-September-6-2021) [Compare Source](https://togithub.com/axios/axios/compare/0.21.3...v0.21.4) Fixes and Functionality: - Fixing JSON transform when data is stringified. Providing backward compatability and complying to the JSON RFC standard ([#​4020](https://togithub.com/axios/axios/pull/4020)) Huge thanks to everyone who contributed to this release via code (authors listed below) or via reviews and triaging on GitHub: - [Jay](mailto:jasonsaayman@gmail.com) - [Guillaume Fortaine](https://togithub.com/gfortaine) - [Yusuke Kawasaki](https://togithub.com/kawanet) - [Dmitriy Mozgovoy](https://togithub.com/DigitalBrainJS) ### [`v0.21.3`](https://togithub.com/axios/axios/blob/master/CHANGELOG.md#​0213-September-4-2021) [Compare Source](https://togithub.com/axios/axios/compare/v0.21.2...0.21.3) Fixes and Functionality: - Fixing response interceptor not being called when request interceptor is attached ([#​4013](https://togithub.com/axios/axios/pull/4013)) Huge thanks to everyone who contributed to this release via code (authors listed below) or via reviews and triaging on GitHub: - [Jay](mailto:jasonsaayman@gmail.com) - [Julian Hollmann](https://togithub.com/nerdbeere)

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[elliotcourant]

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