Drop support for Python 3.6 and 3.7

[edgarrmondragon]

• Python 3.6 EOL was 23 Dec 2021
• Python 3.7 EOL was 27 Jun 2023

[codecov]

Codecov Report

Merging #147 (2861029) into main (20b998e) will decrease coverage by 0.17%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #147      +/-   ##
==========================================
- Coverage   86.67%   86.51%   -0.17%     
==========================================
  Files          27       27              
  Lines        3122     3122              
  Branches      702      683      -19     
==========================================
- Hits         2706     2701       -5     
- Misses        301      305       +4     
- Partials      115      116       +1     

[Erotemic]

Again, why do you want support dropped? I don't understand. If I'm supporting these older versions, what problem is that causing you?

Also, the CI files and most other boilerplate code is autogenerated by xcookie using pyproject.toml, so there is no need to modify them.

[Erotemic]

Going to close this unless there is a reason. Feel free to reopen in that case.