Pin dependencies

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
@material-ui/core (source)	dependencies	pin	^4.11.0 -> 4.11.0
@material-ui/icons	dependencies	pin	^4.9.1 -> 4.9.1
@testing-library/jest-dom	dependencies	pin	^4.2.4 -> 4.2.4
@testing-library/react	dependencies	pin	^9.3.2 -> 9.5.0
@testing-library/user-event	dependencies	pin	^7.1.2 -> 7.2.1
bootstrap (source)	dependencies	pin	^4.5.2 -> 4.5.2
react (source)	dependencies	pin	^16.13.1 -> 16.13.1
react-bootstrap (source)	dependencies	pin	^1.3.0 -> 1.3.0
react-dom (source)	dependencies	pin	^16.13.1 -> 16.13.1
react-particle-animation	dependencies	pin	^1.0.1 -> 1.0.1
react-particles-js	dependencies	pin	^3.3.0 -> 3.3.0
react-router-dom	dependencies	pin	^5.2.0 -> 5.2.0

:pushpin: Important: Renovate will wait until you have merged this Pin PR before creating any upgrade PRs for the affected packages. Add the preset :preserveSemverRanges to your config if you instead don't wish to pin dependencies.

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