fix(deps): update module github.com/mailgun/mailgun-go/v4 to v4.9.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/mailgun/mailgun-go/v4	require	minor	v4.8.2 -> v4.9.0

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Release Notes

mailgun/mailgun-go

v4.9.0

Compare Source

What's Changed

• Add missing Total field in temporary failure stats by @​WilliamRay in https://github.com/mailgun/mailgun-go/pull/298
• Allow setting preferred reply method to mailing lists by @​skynexus in https://github.com/mailgun/mailgun-go/pull/302
• feat: added Send Time Optimization (STO) param by @​cjyang0117 in https://github.com/mailgun/mailgun-go/pull/304

New Contributors

• @​WilliamRay made their first contribution in https://github.com/mailgun/mailgun-go/pull/298
• @​skynexus made their first contribution in https://github.com/mailgun/mailgun-go/pull/302
• @​cjyang0117 made their first contribution in https://github.com/mailgun/mailgun-go/pull/304

Full Changelog: mailgun/mailgun-go@v4.8.2...v4.9.0

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Configuration

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[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (2966e18) 75.17% compared to head (7934d02) 75.17%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #613   +/-   ##
=======================================
  Coverage   75.17%   75.17%           
=======================================
  Files          42       42           
  Lines        1458     1458           
=======================================
  Hits         1096     1096           
  Misses        268      268           
  Partials       94       94           

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