chore(deps): pin dependencies

Author: renovate-bot

sample/26-queues/package.json

@@ -23,7 +23,7 @@
     "@nestjs/common": "6.10.9",
     "@nestjs/core": "6.10.9",
     "@nestjs/platform-express": "6.10.9",
-    "bull": "^3.12.1",
+    "bull": "3.12.1",
     "dotenv": "8.2.0",
     "reflect-metadata": "0.1.13",
     "rimraf": "2.7.1",
@@ -33,7 +33,7 @@
     "@nestjs/cli": "6.12.9",
     "@nestjs/schematics": "6.7.6",
     "@nestjs/testing": "6.10.9",
-    "@types/bull": "^3.10.6",
+    "@types/bull": "3.10.6",
     "@types/dotenv": "6.1.1",
     "@types/express": "4.17.2",
     "@types/jest": "24.0.23",