🐛 Fix dependency install bug

[SimmonsRitchie]

Summary

Updates our Pipfile to fix a dependency conflict issue that has caused our scheduled Github action to fail for the past two months. It also:

• Requires Python 3.9 in our Pipfile
• Specifies Python 3.9 in our Github workflows
• Re-formats five files based on the style rules of a newer version of Black
• Removes three packages that appear to be unused (chardet, twisted and pypiwin32)

Why are we doing this?

We want working scrapers! These changes are modeled heavily on the Pipfiles of our others repos, particularly city-scrapers, which are functioning properly.

These changes appear to have achieved their goal: both our CI and cronjob workflows are now working.

How can these changes be manually tested?

1. If you've previously installed this project, remove your existing virtual environment:
   pipenv --rm
2. Reinstall the project and ensure that there are no errors:
   pipenv sync --dev
3. Run a few of our checks to simulate the checks we run in our CI process:
   pytest && black . --check
4. Ensure our custom Scrapy command is working properly and doesn't throw any errors:
   scrapy validate

For extra credit, you can check that the cronjob workflow works as expected by manually triggering it from this page and using the dropdown menu (pictured below). Just note that it will take about an hour to run:

Are there any smells or added technical debt to note?

• I've specified the Python venv as 3.9 because I think it's ideal for our Github workflows and our dev environment to use the same environment. I've observed a number of dependency conflicts in this and our other city-scraper repos (eg. city-scrapers) and I think it will make these repos easier to maintain and easier to debug in future. I welcome feedback on this choice.
• pypiwin32 is among one of the packages removed. I believe this package was originally installed in order to help Windows-users set up their dev environment. My understanding is this package is outdated and we don't need it. I have more thoughts and research notes in a separate PR here.

[LienDang]

@SimmonsRitchie you can configure your IDE to automatically add a new line at the end of file on save, so Github won't show the red error icon above. See more here https://thoughtbot.com/blog/no-newline-at-end-of-file

[SimmonsRitchie]

Nice catch and great tip! Thanks, @LienDang. This should be fixed now 😊

[LienDang]

Looks good to me!

[SimmonsRitchie]

Excellent! Thanks, @LienDang! Merging now 🚀