chore(package): update aegir to version 8.1.2

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -34,7 +34,7 @@
   },
   "homepage": "https://github.com/ipfs/js-ipfs-unixfs-engineg#readme",
   "devDependencies": {
-    "aegir": "^8.0.1",
+    "aegir": "^8.1.2",
     "buffer-loader": "0.0.1",
     "chai": "^3.5.0",
     "fs-pull-blob-store": "^0.3.0",