Update dependency com.android.application to v8.9.0 (#390)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.android.application](https://developer.android.com/studio/build)
([source](https://android.googlesource.com/platform/tools/base)) |
`8.8.2` -> `8.9.0` |
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|
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|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/com.android.application:com.android.application.gradle.plugin/8.8.2/8.9.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.android.application:com.android.application.gradle.plugin/8.8.2/8.9.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

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android/gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-agp = "8.8.2"
+agp = "8.9.0"
 kotlin = "2.1.10"
 ksp = "2.1.10-1.0.31"
 coreKtx = "1.15.0"