[Snyk] Upgrade canvas from 2.6.1 to 2.7.0#7

snyk-bot wants to merge 1 commit intomasteruhop/grunt-tight-sprite:masterfrom

snyk-upgrade-66a14ddeda43c9ef8242f38feccb7388uhop/grunt-tight-sprite:snyk-upgrade-66a14ddeda43c9ef8242f38feccb7388Copy head branch name to clipboard