chore: point interface-datastore package at async/await branch

Author: dirkmc

package.json

@@ -36,7 +36,7 @@
     "base32-encode": "^1.1.0",
     "debug": "^4.1.1",
     "err-code": "^1.1.2",
-    "interface-datastore": "~0.6.0",
+    "interface-datastore": "ipfs/interface-datastore#refactor/async-iterators",
     "left-pad": "^1.3.0",
     "libp2p-crypto": "~0.16.0",
     "multihashes": "~0.4.14",