Update dependency com.appsflyer:af-android-sdk to v6.12.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.appsflyer:af-android-sdk (source)	6.12.3 -> 6.12.4

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[codecov]

Codecov Report

Merging #3190 (4102c05) into develop (1ba459f) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop    #3190   +/-   ##
========================================
  Coverage    32.76%   32.76%           
========================================
  Files          428      428           
  Lines        10515    10515           
  Branches      2302     2302           
========================================
  Hits          3445     3445           
  Misses        6513     6513           
  Partials       557      557           

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