Fix ChatMemberHandler import in __init__.py

[WhiteMemory99]

Description

The ChatMemberUpdated class is being imported instead of ChatMemberHandler, which is wrong here.

Type of change

Please delete options that are not relevant.

• Documentation (typos, code examples or any documentation update)
• 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

• Test A
• Test B

Test Configuration:

• Operating System:
• Python version:

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
• My changes generate no new warnings
• 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

[codecov]

Codecov Report

Merging #751 (5143c62) into dev-3.x (812fb87) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##           dev-3.x      #751   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          278       278           
  Lines         7316      7316           
=========================================
  Hits          7316      7316           

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

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

Impacted Files	Coverage Δ
aiogram/dispatcher/handler/__init__.py	100.00% <100.00%> (ø)

[JrooTJunior]

Can you please try to update your branch with the latest changes of dev-3.x?

I'm not sure why tests failed only on Windows with Python 3.9 but now it works in the dev-3.x branch.

[WhiteMemory99]

Can you please try to update your branch with the latest changes of dev-3.x?

I'm not sure why tests failed only on Windows with Python 3.9 but now it works in the dev-3.x branch.

Done!

[evgfilim1]

Looks good, thanks for PR!

[JrooTJunior]

Perfect