Bump @nestjs/testing from 6.11.11 to 7.0.0

Bumps [@nestjs/testing](https://github.com/nestjs/nest) from 6.11.11 to 7.0.0.
- [Release notes](https://github.com/nestjs/nest/releases)
- [Commits](nestjs/nest@v6.11.11...v7.0.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -75,7 +75,7 @@
   "devDependencies": {
     "@nestjs/cli": "^6.9.0",
     "@nestjs/schematics": "^6.7.0",
-    "@nestjs/testing": "^6.7.1",
+    "@nestjs/testing": "^7.0.0",
     "@types/bull": "^3.12.2",
     "@types/bytebuffer": "^5.0.40",
     "@types/decompress": "^4.2.3",