Bump deps (#328)

package.json

@@ -29,10 +29,10 @@
     "test:one": "polkadot-dev-run-test"
   },
   "devDependencies": {
-    "@babel/core": "^7.9.6",
-    "@babel/runtime": "^7.9.6",
-    "@polkadot/dev": "^0.54.3",
-    "@polkadot/ts": "^0.3.24",
+    "@babel/core": "^7.10.2",
+    "@babel/runtime": "^7.10.2",
+    "@polkadot/dev": "^0.55.8",
+    "@polkadot/ts": "^0.3.25",
     "@types/jest": "^25.2.3",
     "babel-plugin-transform-vue-template": "^0.4.2",
     "empty": "^0.10.1",