fix: update gapic-generator-java with mock service generation fixes (#…

…255)

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 457524730

Source-Link: googleapis/googleapis@917e7f2

Source-Link: googleapis/googleapis-gen@2497f9a
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiMjQ5N2Y5YTA2OWQzZjZiMmQ2ODEwZDVhNGUyMzljZGExZTdlNWEzOSJ9

google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/ServiceManagerClient.java

@@ -19,6 +19,7 @@
 import com.google.api.Service;
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
+import com.google.api.core.BetaApi;
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.httpjson.longrunning.OperationsClient;
 import com.google.api.gax.longrunning.OperationFuture;
@@ -213,6 +214,7 @@ public final com.google.longrunning.OperationsClient getOperationsClient() {
    * Returns the OperationsClient that can be used to query the status of a long-running operation
    * returned by another API method call.
    */
+  @BetaApi
   public final OperationsClient getHttpJsonOperationsClient() {
     return httpJsonOperationsClient;
   }