[Metadata] Update service import in sanity check test

Bug: b/265108171
Change-Id: I25d5a272b8a3cab18e638e85553bbf5b98997b60
diff --git a/src/test/java/com/android/tools/r8/SanityCheck.java b/src/test/java/com/android/tools/r8/SanityCheck.java
index b82995c..38fa873 100644
--- a/src/test/java/com/android/tools/r8/SanityCheck.java
+++ b/src/test/java/com/android/tools/r8/SanityCheck.java
@@ -29,7 +29,7 @@
 
   private static final String SRV_PREFIX = "META-INF/services/";
   private static final String METADATA_EXTENSION =
-      "com.android.tools.r8.jetbrains.kotlinx.metadata.impl.extensions.MetadataExtensions";
+      "com.android.tools.r8.jetbrains.kotlinx.metadata.internal.extensions.MetadataExtensions";
   private static final String EXT_IN_SRV = SRV_PREFIX + METADATA_EXTENSION;
 
     private void checkJarContent(