fix: allow @fastify/static v7

[alexfriesen]

This change allows updating @fastify/static to v7.

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

What kind of change does this PR introduce?

• 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?

when updating @fastify/static you might get the error "Conflicting peer dependency".

Issue Number: N/A

What is the new behavior?

allows updating @fastify/static

Does this PR introduce a breaking change?

• Yes
• No

Other information

[coveralls]

Pull Request Test Coverage Report for Build 81736f36-5a1e-4304-86a1-c8a83020906a

• 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 92.197%

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Totals
Change from base Build 889ffab4-7a4b-4e81-8f8a-630e303f4274:	0.0%
Covered Lines:	6723
Relevant Lines:	7292

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💛 - Coveralls

[micalevisk]

v7 release notes

not sure why it's a major bump

[kamilmysliwiec]

lgtm