Start validating androidx.annotation signatures

Test: ./gradlew bOS assembleAndroidTest --dry-run
Change-Id: Ic4bb6bf574475270ffb18262e4e867fa35488349
diff --git a/window/window-java/build.gradle b/window/window-java/build.gradle
index 520d3f4..a64e31c 100644
--- a/window/window-java/build.gradle
+++ b/window/window-java/build.gradle
@@ -35,7 +35,7 @@
     api(libs.kotlinCoroutinesCore)
     api(project(":window:window"))
     implementation("androidx.core:core:1.8.0")
-    implementation("androidx.annotation:annotation:1.7.0")
+    implementation("androidx.annotation:annotation:1.8.1")
 
     testImplementation(libs.testCore)
     testImplementation(libs.testRunner)