chore(deps): update nest monorepo to v7.6.8

Author: renovate-bot

package-lock.json

@@ -23,11 +23,11 @@
     "@apollo/gateway": "0.17.0",
     "@commitlint/cli": "11.0.0",
     "@commitlint/config-angular": "11.0.0",
-    "@nestjs/common": "7.6.7",
-    "@nestjs/core": "7.6.7",
-    "@nestjs/platform-express": "7.6.7",
-    "@nestjs/platform-fastify": "7.6.7",
-    "@nestjs/testing": "7.6.7",
+    "@nestjs/common": "7.6.8",
+    "@nestjs/core": "7.6.8",
+    "@nestjs/platform-express": "7.6.8",
+    "@nestjs/platform-fastify": "7.6.8",
+    "@nestjs/testing": "7.6.8",
     "@types/graphql": "14.2.3",
     "@types/jest": "26.0.20",
     "@types/node": "12.12.31",