Bump highcharts from 6.2.0 to 7.2.2 in /frontend/swapcontractcards#1

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masterbridgefin/switchprotocol_fork_demoonly:masterfrom

dependabot/npm_and_yarn/frontend/swapcontractcards/highcharts-7.2.2bridgefin/switchprotocol_fork_demoonly:dependabot/npm_and_yarn/frontend/swapcontractcards/highcharts-7.2.2Copy head branch name to clipboard