Fix crash when sending image with latest posthog

[jmartinesp]

Type of change

• Feature
• Bugfix
• Technical
• Other :

Content

Adds proguard rule to keep an Android internal method even if it's unused.

Motivation and context

Latest proguard version 3.1.0 crashes the app when sending a picture in release mode.

Thanks @surakin for the tentative fix.

Tested devices

• Physical
• Emulator
• OS version(s):

Checklist

• Changes have been tested on an Android device or Android emulator with API 23
• UI change has been tested on both light and dark themes
• Accessibility has been taken into account. See https://github.com/element-hq/element-x-android/blob/develop/CONTRIBUTING.md#accessibility
• Pull request is based on the develop branch
• Pull request includes a new file under ./changelog.d. See https://github.com/element-hq/element-x-android/blob/develop/CONTRIBUTING.md#changelog
• Pull request includes screenshots or videos if containing UI changes
• Pull request includes a sign off
• You've made a self review of your PR

[sonarcloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (afacef0) 67.01% compared to head (e63eb3a) 67.01%.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #2196   +/-   ##
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  Coverage    67.01%   67.01%           
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  Files         1376     1376           
  Lines        34263    34263           
  Branches      7460     7460           
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  Hits         22961    22961           
  Misses        7677     7677           
  Partials      3625     3625           

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[bmarty]

Thanks. Fix tested OK!