fix(deps): update dependency react-bootstrap to v1.2.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
react-bootstrap (source)	dependencies	patch	1.2.0 -> 1.2.1

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Release Notes

react-bootstrap/react-bootstrap

### [`v1.2.1`](https://togithub.com/react-bootstrap/react-bootstrap/blob/master/CHANGELOG.md#​121-httpsgithubcomreact-bootstrapreact-bootstrapcomparev120v121-2020-07-10) [Compare Source](https://togithub.com/react-bootstrap/react-bootstrap/compare/v1.2.0...v1.2.1) ##### Bug Fixes - **Popover:** arrow offset when scrolling offscreen ([#​5287](https://togithub.com/react-bootstrap/react-bootstrap/issues/5287)) ([0e86a51](https://togithub.com/react-bootstrap/react-bootstrap/commit/0e86a51b0680deeb1bb8a0361bb04a235cfc4e77))

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