fix(package): update ipfs-utils to version 0.7.0

Closes #1214

Author: greenkeeper[bot]

package.json

@@ -54,7 +54,7 @@
     "explain-error": "^1.0.4",
     "form-data": "^3.0.0",
     "ipfs-block": "~0.8.1",
-    "ipfs-utils": "^0.4.2",
+    "ipfs-utils": "^0.7.0",
     "ipld-dag-cbor": "~0.15.0",
     "ipld-dag-pb": "^0.18.1",
     "ipld-raw": "^4.0.0",