Migrate a miscellaneous set of libraries to Gradle version catalogs

Test: ./gradlew tasks
Change-Id: I47c569e94bb1caa50a42b8eb60274e027b769226
diff --git a/testutils/testutils-mockito/build.gradle b/testutils/testutils-mockito/build.gradle
index 7582ccd..40d784c 100644
--- a/testutils/testutils-mockito/build.gradle
+++ b/testutils/testutils-mockito/build.gradle
@@ -14,8 +14,6 @@
  * limitations under the License.
  */
 
-import static androidx.build.dependencies.DependenciesKt.*
-
 plugins {
     id("AndroidXPlugin")
     id("com.android.library")
@@ -23,9 +21,9 @@
 }
 
 dependencies {
-    api(MOCKITO_CORE, excludes.bytebuddy)
+    api(libs.mockitoCore, excludes.bytebuddy)
 
-    implementation(KOTLIN_STDLIB)
+    implementation(libs.kotlinStdlib)
 }
 
 android {