Bump webpack-dev-server from 4.9.2 to 4.12.0 in /problem-3/client#388

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dependabot/npm_and_yarn/problem-3/client/webpack-dev-server-4.12.0teamleadercrm/coding-test:dependabot/npm_and_yarn/problem-3/client/webpack-dev-server-4.12.0Copy head branch name to clipboard