build(deps): bump minimist, mkdirp and extract-zip in /knowit2020/reveal.js#81

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dependabot/npm_and_yarn/knowit2020/reveal.js/minimist-and-mkdirp-and-extract-zip-1.2.8jonnor/machinehearing:dependabot/npm_and_yarn/knowit2020/reveal.js/minimist-and-mkdirp-and-extract-zip-1.2.8Copy head branch name to clipboard