Bump json from 1.7.3 to 1.8.6 in /checkout-after#6

dependabot[bot] wants to merge 1 commit intomasterrailscasts/261-testing-javascript-with-jasmine-revised:masterfrom

dependabot/bundler/checkout-after/json-1.8.6railscasts/261-testing-javascript-with-jasmine-revised:dependabot/bundler/checkout-after/json-1.8.6Copy head branch name to clipboard