feat(misc): return timezone aware datetime objects

[chgad]

let http_date_to_dt validate timezone information from the provided http-date and return timezone aware datetime objects remove tests for timezone naive variants
amend tests

Breaks any application relying on naiveness of datetimes or interpretation in local time. Closes #2182

Summary of Changes

Make the function http_date_to_dt validate timezone inforamtion of a http-date and return timezone aware datetime objects.

Related Issues

#2182

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (321bda1) to head (db6fe41).
Report is 1 commits behind head on master.

Additional details and impacted files

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##            master     #2246   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files           63        63           
  Lines         7329      7335    +6     
  Branches      1276      1277    +1     
=========================================
+ Hits          7329      7335    +6     

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[CaselIT]

Thanks for the PR!

I've left a couple of comments

[CaselIT]

looks ok to me. Just left a question over abundance of caution.

Thanks for participating to the sprint!

[vytas7]

Thanks for Sprinting, and thanks for this improvement!
It looks great for the most of it, although we need to revise compliance with the RFC(s) in question before merging.

[vytas7]

OK, so given the required polishing is quite limited in scope, we can merge this, and follow up with a new PR to address the mentioned points.

Thank you once again for the thorough analysis of the problem, and working on this, @chgad!