Bump com.android.application from 7.3.1 to 8.4.1 in /app/android

Bumps com.android.application from 7.3.1 to 8.4.1.

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

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

app/android/settings.gradle

@@ -18,7 +18,7 @@ pluginManagement {
 
 plugins {
     id "dev.flutter.flutter-plugin-loader" version "1.0.0"
-    id "com.android.application" version "8.2.2" apply false
+    id "com.android.application" version "8.4.1" apply false
     id "org.jetbrains.kotlin.android" version "2.0.0" apply false
 }