Bump http-proxy-middleware from 2.0.6 to 2.0.9 in /javascript/web-demo#12

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dependabot/npm_and_yarn/javascript/web-demo/http-proxy-middleware-2.0.9phantom/juicebox-sdk:dependabot/npm_and_yarn/javascript/web-demo/http-proxy-middleware-2.0.9Copy head branch name to clipboard