Update Android SDK version to 36

[stefanosiano]

Update Android SDK version to 36 -> Closes #187
Fixed Proguard rules for Gson -> Closes #190

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 0.00%. Comparing base (77b1722) to head (1dee839).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #191   +/-   ##
=====================================
  Coverage   0.00%   0.00%           
=====================================
  Files         16      16           
  Lines        885     885           
  Branches      65      65           
=====================================
  Misses       885     885           

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[sdzhong]

Do not register for SystemEvents and NetworkCallbacks immediately when launched with non-foreground importance (getsentry/sentry-java#4579)
https://github.com/getsentry/sentry-java/blob/main/CHANGELOG.md#8190

Reducing breadcrumbs (when there isn't a change on launch) due to SDK update now means network.event breadcrumbs no longer appear on app start if there's no change to previous SystemEvents or NetworkCallbacks.