fix(deps): update dependency axios to v0.21.4

[gul-leanix]

PR Checklist

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• The commit message follows our guidelines: https://github.com/nestjs/nest/blob/master/CONTRIBUTING.md
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Other... Please describe:

What is the current behavior?

The currently used axios version is vulnerable to a ReDoS vulnerability.

Issue Number: #142

What is the new behavior?

By updating the axios dependency, the vulnerability is closed.

Does this PR introduce a breaking change?

[ ] Yes
[x] No

[lnmunhoz]

Hey guys, please update this 👍

[nvanexan]

Will this be approved soon?

[BeigeBox]

Are there any particular test cases this is waiting on? It seems like this is a super straightforward PR? Can the community help in some way, or are we just waiting for someone authorized to merge it in?

[GeneralistDev]

Can we prefer #149 over this?

[kamilmysliwiec]

LGTM