chore(deps-dev): bump @nestjs/testing from 7.5.1 to 7.6.5

Bumps [@nestjs/testing](https://github.com/nestjs/nest) from 7.5.1 to 7.6.5.
- [Release notes](https://github.com/nestjs/nest/releases)
- [Commits](https://github.com/nestjs/nest/commits/v7.6.5)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -100,7 +100,7 @@
     "@commitlint/config-conventional": "11.0.0",
     "@nestjs/common": "^7.5.1",
     "@nestjs/core": "^7.5.1",
-    "@nestjs/testing": "^7.5.1",
+    "@nestjs/testing": "^7.6.5",
     "@types/jest": "26.0.15",
     "commitizen": "4.2.2",
     "coveralls": "3.1.0",