[EASI-4645] send emails

[samoddball]

EASI-4645

Description

• connect resolvers to sending emails

How to test this change

• create a system intake locally
• add a user of your choice as a GRB reviewer
• open postman (EASI/System Intake/GRB Meeting (Async)/Create GRB Discussion Group Tags)
• enter the created system intake id as well as the user's uuid in the tag span
• send the request
• confirm an email goes out

PR Author Checklist

• I have provided a detailed description of the changes in this PR.
• I have provided clear instructions on how to test the changes in this PR.
• I have updated tests or written new tests as appropriate in this PR.

PR Reviewer Guidelines

• It's best to pull the branch locally and test it, rather than just looking at the code online!
• When approving a PR, provide a reason why you're approving it
  • e.g. "Approving because I tested it locally and all functionality works as expected"
  • e.g. "Approving because the change is simple and matches the Figma design"
• Don't be afraid to leave comments or ask questions, especially if you don't understand why something was done! (This is often a great time to suggest code comments or documentation updates)
• Check that all code is adequately covered by tests - if it isn't feel free to suggest the addition of tests.

[github-actions]

EKS Ingress URLs

• EASi
• Mailcatcher
• Minio Console

[samoddball]

EKS Ingress URLs

* [EASi](http://k8s-easi2910-easiingr-42e41921b4-614762738.us-west-2.elb.amazonaws.com)

* [Mailcatcher](http://k8s-easi2910-emailing-3a7f849503-696994186.us-west-2.elb.amazonaws.com)

* [Minio Console](http://k8s-easi2910-miniocon-eaae656b54-1477551703.us-west-2.elb.amazonaws.com)

@Jdwoodson this is SO COOL - thank you so much

[mynar7]

Tested with postman and everything seems to work!

Some good catches/corrections as well, nice work.