chore(package): update idb-pull-blob-store to version 0.5.1

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -41,7 +41,7 @@
     "buffer-loader": "0.0.1",
     "chai": "^3.5.0",
     "fs-pull-blob-store": "^0.3.0",
-    "idb-pull-blob-store": "^0.4.0",
+    "idb-pull-blob-store": "^0.5.1",
     "ipfs-block": "^0.3.0",
     "ipfs-repo": "^0.9.0",
     "lodash": "^4.15.0",