Bump qs and express in /4-3-XRay/demo-app/service-b#31

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dependabot/npm_and_yarn/4-3-XRay/demo-app/service-b/qs-and-express-6.11.0linuxacademy/eks-deep-dive-2019:dependabot/npm_and_yarn/4-3-XRay/demo-app/service-b/qs-and-express-6.11.0Copy head branch name to clipboard