Streamline dev dependency management

[jakob-keller]

Description of Change

Prepares CI/CD workflow for testing of distribution packages (#1169)

Assumptions

• aiohttp version constraint in CI/CD workflow is no longer required
• time statements in CI/CD workflow are no longer required

Checklist for All Submissions

• I have added change info to CHANGES.rst
• If this is resolving an issue (needed so future developers can determine if change is still necessary and under what conditions) (can be provided via link to issue with these details):
  • Detailed description of issue
  • Alternative methods considered (if any)
  • How issue is being resolved
  • How issue can be reproduced
• If this is providing a new feature (can be provided via link to issue with these details):
  • Detailed description of new feature
  • Why needed
  • Alternatives methods considered (if any)

Checklist when updating botocore and/or aiohttp versions

• I have read and followed CONTRIBUTING.rst
• I have updated test_patches.py where/if appropriate (also check if no changes necessary)
• I have ensured that the awscli/boto3 versions match the updated botocore version

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.94%. Comparing base (1aa309d) to head (feb16ab).
Report is 8 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1185      +/-   ##
==========================================
- Coverage   86.99%   86.94%   -0.06%     
==========================================
  Files          64       64              
  Lines        5983     5983              
==========================================
- Hits         5205     5202       -3     
- Misses        778      781       +3     

Flag	Coverage Δ
unittests	86.94% <ø> (-0.06%)	⬇️

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[webknjaz]

What's the game plan here? This is definitely different from anything I've ever seen in the wild…

[thehesiod]

yea, was fast and lose, we should tighten it up

[jakob-keller]

I've opened #1188 for tracking the step-change improvement in dependency management.

Nonetheless, I believe it makes sense to do this PR now to get rid of technical debt.