Bump lodash from 4.17.20 to 4.17.21 in /sketches/iridescence-shader#20

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dependabot/npm_and_yarn/sketches/iridescence-shader/lodash-4.17.21leifniem/Generative-Sketches:dependabot/npm_and_yarn/sketches/iridescence-shader/lodash-4.17.21Copy head branch name to clipboard