[FEAT] Add/find logs for the coronalert-notify lambda

[acthelemann]

⚠️ IMPORTANT: Please fill out this template to give us as much information as possible to consider/implement the feature.

Prerequisites

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  • Reviewed the contributing guidelines and support files
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Summary

Logs for the subscribe and unsubscribe lambdas can be found in CloudWatch, but not for the notify lambda. Maybe they're stored somewhere else or maybe they have to be "hooked up" to CloudWatch somehow.

• coronalert-notify logs can be read in the AWS console

Motivation

Debugging purposes.

Possible Alternatives

Use Twilio logs instead.