feat: add rerender as an alias for update (#149)

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### Summary

Users of `react-testing-library` use `rerender` wording instead of `update`. Let's make it easier for them by aliasing it.
See: https://testing-library.com/docs/react-testing-library/api#rerender

### Test plan

Added cases for JS tests and TS typings

src/render.js

@@ -27,6 +27,7 @@ export default function render(
     ...getByAPI(instance),
     ...queryByAPI(instance),
     update: updateWithAct(renderer),
+    rerender: updateWithAct(renderer), // alias for `update`
     unmount: renderer.unmount,
     toJSON: renderer.toJSON,
     debug: debug(instance, renderer),