chore(deps): pin dependencies

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
@nestjs/testing (source)	devDependencies	pin	^6.3.1 -> 6.3.1
@types/express	devDependencies	pin	^4.17.0 -> 4.17.0
@types/jest	devDependencies	pin	^25.1.0 -> 25.1.4
@types/node	devDependencies	pin	^13.1.0 -> 13.1.1
jest (source)	devDependencies	pin	^24.8.0 -> 24.8.0
lerna	devDependencies	pin	^3.15.0 -> 3.15.0
prettier (source)	devDependencies	pin	^1.18.2 -> 1.18.2
rimraf	devDependencies	pin	^3.0.0 -> 3.0.0
supertest	devDependencies	pin	^4.0.2 -> 4.0.2
ts-jest (source)	devDependencies	pin	^24.0.2 -> 24.0.2
tslint (source)	devDependencies	pin	^5.17.0 -> 5.17.0
typescript (source)	devDependencies	pin	~3.5.2 -> 3.5.2

:pushpin: Important: Renovate will wait until you have merged this Pin PR before creating any upgrade PRs for the affected packages. Add the preset :preserveSemverRanges your config if you instead don't wish to pin dependencies.

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