Bump debug from 2.6.4 to 2.6.9#6

dependabot[bot] wants to merge 1 commit intomasterAppGeo/postgres2cartodb:masterfrom

dependabot/npm_and_yarn/debug-2.6.9AppGeo/postgres2cartodb:dependabot/npm_and_yarn/debug-2.6.9Copy head branch name to clipboard