build(deps): bump com.android.application

Bumps com.android.application from 9.1.0 to 9.4.0.

---
updated-dependencies:
- dependency-name: com.android.application
  dependency-version: 9.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

mobile/sam-node-app/android/settings.gradle.kts

@@ -19,7 +19,7 @@ pluginManagement {
 
 plugins {
     id("dev.flutter.flutter-plugin-loader") version "1.0.0"
-    id("com.android.application") version "9.1.0" apply false
+    id("com.android.application") version "9.4.0" apply false
     id("org.jetbrains.kotlin.android") version "2.3.20" apply false
     id("com.google.gms.google-services") version "4.4.2" apply false
     id("com.google.devtools.ksp") version "2.3.12" apply false