[AI] Update App Check dependencies in firebase-ai

Updated the firebase-ai module to start depending on
firebase-appcheck. Also, make the dependencies point to the local
project for the next release.

Author: rlazo

ai-logic/firebase-ai/firebase-ai.gradle.kts

@@ -86,7 +86,8 @@ dependencies {
   api(libs.firebase.common)
   implementation(libs.firebase.components)
   implementation(libs.firebase.annotations)
-  implementation("com.google.firebase:firebase-appcheck-interop:17.1.0")
+  implementation(project(":appcheck:firebase-appcheck"))
+  implementation(project(":appcheck:firebase-appcheck-interop"))
   implementation(libs.androidx.annotation)
   implementation(libs.kotlinx.serialization.json)
   implementation(libs.androidx.core.ktx)