Dev dependency benchmark updated to version 2.1.4

Author: renovate-bot

package.json

@@ -34,11 +34,11 @@
     "histogram"
   ],
   "devDependencies": {
-    "eslint": "^6.5.0",
-    "eslint-config-airbnb-base": "^14.0.0",
-    "eslint-plugin-import": "^2.18.2",
-    "benchmark": "^2.1.4",
-    "tap": "^14.6.9",
-    "prom-client": "^11.5.3"
+    "eslint": "6.8.0",
+    "eslint-config-airbnb-base": "14.0.0",
+    "eslint-plugin-import": "2.19.1",
+    "benchmark": "2.1.4",
+    "tap": "14.10.5",
+    "prom-client": "11.5.3"
   }
 }