fix: bumps express and body-parser to their latest versions

[bu-michael]

PR Checklist

Please check if your PR fulfills the following requirements:

• 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

Fixes #13960 and #13959

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Fix security vulnerabilities

What is the current behavior?

• Vulnerability in Express < 4.20.0 #13960
• body-parser npm audit high vulnerability #13959

What is the new behavior?

Does this PR introduce a breaking change?

• Yes
• No

Other information

[coveralls]

Pull Request Test Coverage Report for Build ffd339f1-ecfc-43e0-8c6e-04b3fbe194d2

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 92.213%

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Totals
Change from base Build 0b2170fc-d850-443a-8e46-397cb7d6d6fd:	0.0%
Covered Lines:	6750
Relevant Lines:	7320

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💛 - Coveralls

[Kenzo-Wada]

When will this PR be merged?? I'd appreciate it if you could merge it soon since it relates to a vulnerability in our service..... ❤️

[thomashohn]

@bu-michael Could you bump express to 4.21.0?

[bu-michael]

@bu-michael Could you bump express to 4.21.0?

For sure

[LucasGabrielBecker]

+1 waiting for this

[brunoventurazup]

+1 waiting for this

[bu-michael]

@thomashohn Bumped express to 4.21.0

[thomashohn]

@bu-michael - nice - unfortunately I'm no maintainer of this repo - but would like have have it merged ASAP too :)

[kamilmysliwiec]

Fixed in #13971