[#804] Fix AWS Lambda deploy guide using @vendia/serverless-express

[mwbrooks]

Summary

Fixes #804

This pull request updates the AWS Lambda deployment guide and example to fix the error serverlessExpress is not a fucntion.

We accomplish this by updating the @vendia/serverless-express package version to be 4.x.x or later. The earlier versions used the original .createServer and .proxy interface, while >=4.0.0 introduced a new single function interface.

I've updated the documentation and example app to use the latest version. In the guide, I call out that we required >=4.0.0 in case a developer uses an older version.

I've tested this locally using serverless-offline and on AWS Lambda.

Requirements (place an x in each [ ])

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.

[codecov]

Codecov Report

Merging #806 (3208d01) into main (0eca1ba) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #806   +/-   ##
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  Coverage   65.47%   65.47%           
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  Files          11       11           
  Lines        1089     1089           
  Branches      323      323           
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  Hits          713      713           
  Misses        317      317           
  Partials       59       59           

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[seratch]

Can you add this in the Japanese version?

💡 このガイドはバージョン 4.x.x 以上を必要とします

[mwbrooks]

Updated in commit 3208d01 (I'll squash the merge).

Thanks for catching this! I need to get better at checking the Japanese docs when we do updates.

[seratch]

@mwbrooks Thanks! Now you can merge this PR 👍