Bump debug from 2.6.8 to 2.6.9#4

dependabot[bot] wants to merge 1 commit intomasternikfrank/react-chess-pieces:masterfrom

dependabot/npm_and_yarn/debug-2.6.9nikfrank/react-chess-pieces:dependabot/npm_and_yarn/debug-2.6.9Copy head branch name to clipboard