Update dependency rollbar to v2.21.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
rollbar	2.21.0 -> 2.21.1

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Release Notes

rollbar/rollbar.js

### [`v2.21.1`](https://togithub.com/rollbar/rollbar.js/releases/v2.21.1) [Compare Source](https://togithub.com/rollbar/rollbar.js/compare/v2.21.0...v2.21.1) ##### Highlights Enables uncaught error capture for Web Workers. ##### Pull Requests Enable uncaught error capture for web workers, [#​929](https://togithub.com/rollbar/rollbar.js/pull/929)

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