To upgrade to `react-bootstrap` version `2` which supports `bootstrap` version `5`

[JonathanLeeWH]

• To upgrade to react-bootstrap version 2 which supports bootstrap version 5 but need to check compatibility with other dependencies before doing so such as react-bootstrap-typeahead npm package where it is currently not compatible (As of 22 October 2021) with bootstrap 5 and work on compatibility is still in progress: Link