fix: update lock file package to fix compromised lock check (#193)

Author: hugomrdias

package.json

@@ -67,7 +67,7 @@
     "lodash.has": "^4.5.2",
     "lodash.set": "^4.3.2",
     "multiaddr": "^6.0.4",
-    "proper-lockfile": "^3.2.0",
+    "proper-lockfile": "^4.0.0",
     "pull-stream": "^3.6.9",
     "sort-keys": "^2.0.0"
   },