Bump deps (#992)

* Bump deps

* Uopdate CHANGELOG while waiting for CI...

* Bump with latest common

packages/rpc-provider/package.json

@@ -28,15 +28,15 @@
   "dependencies": {
     "@babel/runtime": "^7.4.5",
     "@polkadot/storage": "^0.81.0-beta.8",
-    "@polkadot/util": "^0.93.0-beta.1",
-    "@polkadot/util-crypto": "^0.93.0-beta.1",
+    "@polkadot/util": "^0.93.0-beta.3",
+    "@polkadot/util-crypto": "^0.93.0-beta.3",
     "@types/nock": "^10.0.3",
     "eventemitter3": "^3.1.0",
     "isomorphic-fetch": "^2.2.1",
     "websocket": "^1.0.28"
   },
   "devDependencies": {
-    "@polkadot/keyring": "^0.93.0-beta.1",
+    "@polkadot/keyring": "^0.93.0-beta.3",
     "mock-socket": "^8.0.5",
     "nock": "^10.0.4"
   }