chore(deps): update Android SDK to v6.21.0

[github-actions]

Bumps flutter/scripts/update-android.sh from 6.20.0 to 6.21.0.

Auto-generated by a dependency updater.

Changelog

6.21.0

Features

• Introduce new sentry-android-sqlite integration (#2722)
  • This integration replaces the old androidx.sqlite database instrumentation in the Sentry Android Gradle plugin
  • A new capability to manually instrument your androidx.sqlite databases.
    • You can wrap your custom SupportSQLiteOpenHelper instance into SentrySupportSQLiteOpenHelper(myHelper) if you're not using the Sentry Android Gradle plugin and still benefit from performance auto-instrumentation.
• Add SentryWrapper for Callable and Supplier Interface (#2720)
• Load sentry-debug-meta.properties (#2734)
  • This enables source context for Java
  • For more information on how to enable source context, please refer to #633

Fixes

• Finish WebFlux transaction before popping scope (#2724)
• Use daemon threads for SentryExecutorService (#2747)
  • We started using SentryExecutorService in 6.19.0 which caused the application to hang on shutdown unless Sentry.close() was called. By using daemon threads we no longer block shutdown.
• Use Base64.NO_WRAP to avoid unexpected char errors in Apollo (#2745)
• Don't warn R8 on missing ComposeViewHierarchyExporter class (#2743)

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (5d2b46d) 90.25% compared to head (f5a0d8c) 90.25%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1500   +/-   ##
=======================================
  Coverage   90.25%   90.25%           
=======================================
  Files         182      182           
  Lines        5786     5786           
=======================================
  Hits         5222     5222           
  Misses        564      564           

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