build(deps): bump android-gradle-plugin from 8.9.1 to 9.0.0

Bumps `android-gradle-plugin` from 8.9.1 to 9.0.0.

Updates `com.android.application` from 8.9.1 to 9.0.0

Updates `com.android.library` from 8.9.1 to 9.0.0

---
updated-dependencies:
- dependency-name: com.android.application
  dependency-version: 9.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: com.android.library
  dependency-version: 9.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

gradle/libs.versions.toml

@@ -24,7 +24,7 @@ ktor = "2.3.9"
 markdown-renderer = "0.30.0"
 fading-edges = "1.0.4"
 kotlin = "2.1.10"
-android-gradle-plugin = "8.9.1"
+android-gradle-plugin = "9.0.0"
 dev-tools-gradle-plugin = "2.1.10-1.0.29"
 about-libraries-gradle-plugin = "12.1.2"
 coil = "2.7.0"