Bump flatted from 3.3.3 to 3.4.2 in /nav-app#764

clemiller merged 5 commits intodevelopmitre-attack/attack-navigator:developfrom

dependabot/npm_and_yarn/nav-app/flatted-3.4.2mitre-attack/attack-navigator:dependabot/npm_and_yarn/nav-app/flatted-3.4.2Copy head branch name to clipboard