move python to 3.8, upgrade psycopg to 2.84

[eric38383]

TECH-7630

Non-technical Context

None

Technical Context

Upgrade Docker Image to Python 3.8

• The upgrade required psycopg 2.84

I received an error building 3.8

After doing some research, it seems that this was fixed

psycopg/psycopg2#854

Reproduction Steps

Manual Testing Instructions

• Pull down the branch and
• run docker-compose build docker-compose up
• Exec into the container and check the python version. It should be 3.8.3

QA Checklist

Developer

• Ensure code complies with the style guide
• Devise edge cases to test the bug fix or feature being merged
• Make sure the code is clean and understandable
• Ensure code is not overly inefficient
• [N/A] Ensure documentation is understandable and accurate, including:
  • Code comments and doc strings
  • Technical documentation

Reviewer

• Ensure code complies with the style guide
  • If there are few or minor issues, add inline GitHub comments
  • If there are many issues or it seems like the developer did not follow the style guide, leave a comment asking them to do so
• Devise edge cases to test the bug fix or feature being merged
• Make sure the code is clean and understandable
  • [na] Ask for inline comments on unclear sections
• Ensure code is not overly inefficient
• [na] Ensure documentation is understandable and accurate, including:
  • [na] Code comments and doc strings
  • [na] Technical documentation

[eric38383]

@greglinch Not sure if the version change affects anything in production. We can discuss this before merging in

[greglinch]

@eric38383 Looks good to me locally, thanks! Production doesn't use a docker container yet and I only re-install requirements there when needed. Given that there's nothing on the horizon that will need a new installation, it shouldn't affect anything there for now.