Bump grunt from 1.0.2 to 1.5.3 in /9-square/plugins/stickyfill#21

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dependabot/npm_and_yarn/9-square/plugins/stickyfill/grunt-1.5.3sshark/sshark.github.io:dependabot/npm_and_yarn/9-square/plugins/stickyfill/grunt-1.5.3Copy head branch name to clipboard