chore: upgrade create react app

[satello]

• Upgrade create react app and kathari

[coveralls]

Pull Request Test Coverage Report for Build 502

• 8 of 15 (53.33%) changed or added relevant lines in 8 files are covered.
• 72 unchanged lines in 9 files lost coverage.
• Overall coverage increased (+2.8%) to 26.529%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/containers/dispute/components/details/index.js	0	1	0.0%
src/containers/tokens/index.js	0	1	0.0%
src/sagas/dispute.js	0	5	0.0%
<!--	Total:	8	15	53.33%	-->

Files with Coverage Reduction	New Missed Lines	%
src/sagas/dispute.js	1	1.12%
src/containers/dispute/components/ruling/index.js	1	0.0%
src/containers/disputes/index.js	2	0.0%
src/containers/dispute/components/details/index.js	4	0.0%
src/containers/dispute/index.js	6	0.0%
src/containers/home/index.js	8	0.0%
src/containers/tokens/index.js	9	0.0%
src/chainstrap/utils/functional.js	11	0.0%
src/components/icosahedron/index.js	30	0.0%
<!--	Total:	72		-->

Totals
Change from base Build 476:	2.8%
Covered Lines:	255
Relevant Lines:	910

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💛 - Coveralls