fix(package): update cids to version 0.8.0

Author: greenkeeper[bot]

package.json

@@ -66,7 +66,7 @@
     "npm": ">=3.0.0"
   },
   "dependencies": {
-    "cids": "~0.7.3",
+    "cids": "~0.8.0",
     "class-is": "^1.1.0",
     "multicodec": "^1.0.0",
     "multihashing-async": "~0.8.0",