Solve Deprecation Warnings

[DMalone87]

Describe the Issue
We have a number of deprecation warnings showing up for python package that have passed their prime. We'll need to tackle these and move to processes that are still supported.

• passlib.context.CryptContext.encrypt()
• werkzeug.urls.url_parse
• werkzeug.urls.URL
• CovPlugin.pytest_configure_node (uses old-style configuration)
• CovPlugin.pytest_testnodedown (uses old-style configuration)

To Reproduce
Steps to reproduce the behavior:

1. Spin up the application using docker (or locally on your machine).
2. Connect to the API container. (docker exec -it "police-data-trust-api-1" /bin/bash)
3. Run python -m pytest
4. Review the warnings that are produced.