Bump lodash from 4.17.20 to 4.17.21 in /client/grpc-web-fake-transport#1072

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dependabot/npm_and_yarn/client/grpc-web-fake-transport/lodash-4.17.21improbable-eng/grpc-web:dependabot/npm_and_yarn/client/grpc-web-fake-transport/lodash-4.17.21Copy head branch name to clipboard