Bump deps (& use packageInfo detection) (#441)

packages/example-react/src/packageInfo.ts

@@ -0,0 +1,6 @@
+// Copyright 2017-2021 @polkadot/dev authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+// Auto-generated by @polkadot/dev, do not edit
+
+export const packageInfo = { name: '@polkadot/example-react', version: '0.69.2-0' };