Improve dependency workflow

[cosenal]

Description

• Remove dependencies that are no longer used in the project
• ^ was checked with deptry, which is now a tool added to the project
• new GitHub action to auto-merge dependabot PR for patch updates (who are we kidding, none of us goes through the changelog anyway before approving those PRs!)

Issue ticket number and link

Fixes #164

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

Checklist:

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules (or not applicable)

[vprusso]

This will save me from getting carpel tunnel syndrome in approving/merging all of the dependabot things each week. Nice!

[cosenal]

@vprusso assuming that it works :)