[Bug] Update targetSdkVersion to API 35 (Android 15) to meet Google Play requirements

[Cryjai]

Checklist

• I make sure that the issue is NOT a duplicate of pinned issues
• I make sure I am using the LATEST version - check here
• I understand that issues with limited impact, such as those occurring on specific devices or under specific network conditions, will not be fixed
• I have attached the error report in the issue

Describe the bug

PipePipe is currently being blocked by Google Play Protect on Android 14+ devices with the error message:

"This app was built for an older version of Android and doesn't include the latest privacy protections."

This happens because the current targetSdkVersion is below the minimum requirement enforced by Android 14+ and Google Play.

Current Situation
Current targetSdkVersion: Unknown (appears to be below API 26 based on Play Protect warnings)
Google Play requirement (as of 2026): API 35 (Android 15) source
Android 14 enforcement: Apps targeting below API 23 cannot be installed without ADB bypass
Impact
Users on Android 14+ cannot install PipePipe without:
Manually bypassing Google Play Protect warnings
Disabling Play Protect entirely (security risk)
Using ADB commands (adb install --bypass-low-target-sdk-block)
This creates friction for new users and damages the app's reputation as a privacy-focused solution

Version

5.1.0

Frequency

Always (100% of the time)

Device

Samsung A37

Steps to reproduce the bug

No response

Additional context

No response