fix(deps): update nest monorepo to v7.6.15 - autoclosed

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@nestjs/common (source)	^7.6.11 -> 7.6.15
@nestjs/core (source)	^7.6.11 -> 7.6.15
@nestjs/platform-express (source)	^7.6.11 -> 7.6.15
@nestjs/testing (source)	^7.6.11 -> 7.6.15

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Release Notes

nestjs/nest

### [`v7.6.15`](https://togithub.com/nestjs/nest/compare/v7.6.14...v7.6.15) [Compare Source](https://togithub.com/nestjs/nest/compare/v7.6.14...v7.6.15) ### [`v7.6.14`](https://togithub.com/nestjs/nest/compare/v7.6.13...v7.6.14) [Compare Source](https://togithub.com/nestjs/nest/compare/v7.6.13...v7.6.14) ### [`v7.6.13`](https://togithub.com/nestjs/nest/compare/v7.6.12...v7.6.13) [Compare Source](https://togithub.com/nestjs/nest/compare/v7.6.12...v7.6.13) ### [`v7.6.12`](https://togithub.com/nestjs/nest/compare/v7.6.11...v7.6.12) [Compare Source](https://togithub.com/nestjs/nest/compare/v7.6.11...v7.6.12)

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Configuration

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