Update dependency react-router-dom to v5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	References
react-router-dom	dependencies	major	^4.1.2 -> ^5.0.0	source

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Release Notes

ReactTraining/react-router

v5.0.0

Compare Source

Please see the blog post and the list of 4.4 beta releases for details.

Changes

• Lots of compatibility improvements with React 16
• Full compatibility with <React.StrictMode>
• Better support for React.forwardRef in <Route component>
• Better support for React.createRef in <Link innerRef>
• Single-file builds, per-file imports are deprecated see the beta.1 notes
• Pre-built bundles for both development and production

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