Apply isort

[Olegt0rr]

Description

Just applied isort from contribution guide

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• 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

[github-actions]

🌽 Changelog is not needed.

This PR does not require a changelog because skip news label is present.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (0335bb1) to head (bc5db8b).
Report is 1 commits behind head on dev-3.x.

Additional details and impacted files

@@            Coverage Diff            @@
##           dev-3.x     #1508   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          436       436           
  Lines        11294     11294           
=========================================
  Hits         11294     11294           

Flag	Coverage Δ
unittests	100.00% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
aiogram/client/bot.py	100.00% <ø> (ø)
aiogram/methods/__init__.py	100.00% <100.00%> (ø)