Chore/update go env

[gweiying]

Problem

What problem are you trying to solve? What issue does this close?

Our go environment is running on deprecated AL1 machines. We want to upgrade them as they are deprecated.
Closes #1839

Solution

• Set up new environments go-staging and go-production on AL2 instances
• Update deployment pipeline to deploy to new environments
• After testing new environments, swap DNS resolution to new environments

Tests

What tests should be run to confirm functionality?

Refer to deployment notes below

Deploy Notes

Note: Since the deployment pipelines will be deploying to the new environment, we will not be able to roll out any application updates to the live application.

Staging

• Update the deployment pipeline to deploy to the new environment
• Change Cloudflare DNS to point staging to new environment
• Run through manual tests on new environment
• Verify that end-to-end tests are also working fine

Master

• Update the deployment pipeline to deploy to the new environment
• Change Cloudflare DNS to point staging to new environment
• Run through manual tests on new environment (no file uploads)
• Verify that end-to-end tests are also working fine
• Swap DNS staging to point back to staging environment
• Swap DNS production to point to new environment
• Post-swap test (file uploads)