Bump lodash from 4.17.15 to 4.17.21 in /Lectures/Lecture4/exercises4#11

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dependabot/npm_and_yarn/Lectures/Lecture4/exercises4/lodash-4.17.21daviddwlee84/Harvard-CS50M-ReactNative:dependabot/npm_and_yarn/Lectures/Lecture4/exercises4/lodash-4.17.21Copy head branch name to clipboard