hotfix/cp-11054-jcenter-not-supported-in-gradle-9

[unnaticleverpush]

improve Gradle 8+ and Gradle 9 compatibility

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Summary by cubic

Remove jcenter() and modernize the Android Gradle config to work with Gradle 8 and 9. Addresses CP-11054 (jcenter not supported in Gradle 9) and meets AGP 8+ requirements.

• Refactors

  • Drop deprecated buildscript/allprojects blocks; add module repositories { google(); mavenCentral() }.
  • Add namespace "com.cleverpush.reactnative".
  • Update compileSdkVersion to 34 and minSdkVersion to 21.
  • Make safeExtGet return explicit.

• Migration

  • Projects must target compile SDK 34 and min SDK 21 or higher.

^{Written for commit 2865ab3. Summary will update on new commits.}

[cubic-dev-ai]

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