chore: bump cookie and express in /examples/mern-cdk-ci-cd/mern/client#371

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dependabot/npm_and_yarn/examples/mern-cdk-ci-cd/mern/client/multi-9f37c16f8fmongodb/awscdk-resources-mongodbatlas:dependabot/npm_and_yarn/examples/mern-cdk-ci-cd/mern/client/multi-9f37c16f8fCopy head branch name to clipboard