Implement AutoCloseable for TestcontainersExtension$StoreAdapter

modules/junit-jupiter/src/main/java/org/testcontainers/junit/jupiter/TestcontainersExtension.java

@@ -260,7 +260,7 @@ private static StoreAdapter getContainerInstance(final Object testInstance, fina
      * thereby letting the JUnit automatically stop containers once the current
      * {@link ExtensionContext} is closed.
      */
-    private static class StoreAdapter implements CloseableResource {
+    private static class StoreAdapter implements CloseableResource, AutoCloseable {
 
         @Getter
         private String key;