Bump keyring (w/ Ethereum address allowance) (#492)

package.json

@@ -30,7 +30,7 @@
     "@babel/core": "^7.14.6",
     "@babel/runtime": "^7.14.6",
     "@polkadot/dev": "^0.62.43",
-    "@polkadot/ts": "^0.3.91",
+    "@polkadot/ts": "^0.4.1",
     "@types/jest": "^26.0.23",
     "babel-plugin-transform-vue-template": "^0.4.2",
     "empty": "^0.10.1",