chore(package): update libp2p-crypto to version 0.6.1

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -39,7 +39,7 @@
     "pre-commit": "^1.1.3"
   },
   "dependencies": {
-    "libp2p-crypto": "^0.5.0",
+    "libp2p-crypto": "^0.6.1",
     "multihashes": "^0.2.2"
   },
   "repository": {