Support 16kb page size for Android 15 (8.x.x)

[markushi]

:scroll: Description

Counterpart to 7.x.x PR https://github.com/getsentry/sentry-java/pull/3620 Also increases the minSdk version to 21.

:bulb: Motivation and Context

:green_heart: How did you test it?

:pencil: Checklist

• [ ] I reviewed the submitted code.
• [ ] I added tests to verify the changes.
• [ ] No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• [ ] I updated the docs if needed.
• [ ] Review from the native team if needed.
• [ ] No breaking change or entry added to the changelog.
• [ ] No breaking change for hybrid SDKs or communicated to hybrid SDKs.

:crystal_ball: Next steps

[github-actions[bot]]

	Messages
:book:	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Generated by :no_entry_sign: dangerJS against 486c1e0e0afedddb3e3c63971dbec56cae7239ec

[github-actions[bot]]

Performance metrics :rocket:

	Plain	With Sentry	Diff
Startup time	444.73 ms	505.47 ms	60.74 ms
Size	1.70 MiB	2.30 MiB	617.43 KiB