Bump jszip and grunt-zip in /slides#21

dependabot[bot] wants to merge 1 commit intomasterubc-library-rc/intro-shell:masterfrom

dependabot/npm_and_yarn/slides/jszip-and-grunt-zip-2.7.0ubc-library-rc/intro-shell:dependabot/npm_and_yarn/slides/jszip-and-grunt-zip-2.7.0Copy head branch name to clipboard