[GRPC] Fix compilation errors from core protobuf version bump to 0.23.0

CHANGELOG.md

@@ -31,6 +31,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Fix build failure in SecurityFilterTests ([#5736](https://github.com/opensearch-project/security/pull/5736))
 - Replace AccessController and remove restriction on word Extension ([#5750](https://github.com/opensearch-project/security/pull/5750))
 - Add security provider earlier in bootstrap process ([#5749](https://github.com/opensearch-project/security/pull/5749))
+- [GRPC] Fix compilation errors from core protobuf version bump to 0.23.0 ([#5763](https://github.com/opensearch-project/security/pull/5763))
 
 ### Maintenance
 - Bump `org.junit.jupiter:junit-jupiter` from 5.13.4 to 5.14.0 ([#5678](https://github.com/opensearch-project/security/pull/5678))

src/integrationTest/java/org/opensearch/security/grpc/GrpcHelpers.java

@@ -148,7 +148,7 @@ public static BulkResponse doBulk(ManagedChannel channel, String index, long num
                 .setOperationContainer(opCont)
                 .setObject(com.google.protobuf.ByteString.copyFromUtf8(docBody))
                 .build();
-            requestBuilder.addRequestBody(requestBody);
+            requestBuilder.addBulkRequestBody(requestBody);
         }
         DocumentServiceGrpc.DocumentServiceBlockingStub stub = DocumentServiceGrpc.newBlockingStub(channel);
         return stub.bulk(requestBuilder.build());
@@ -157,7 +157,7 @@ public static BulkResponse doBulk(ManagedChannel channel, String index, long num
     public static SearchResponse doMatchAll(ManagedChannel channel, String index, int size) {
         QueryContainer query = QueryContainer.newBuilder().setMatchAll(MatchAllQuery.newBuilder().build()).build();
         SearchRequestBody requestBody = SearchRequestBody.newBuilder().setSize(size).setQuery(query).build();
-        SearchRequest searchRequest = SearchRequest.newBuilder().addIndex(index).setRequestBody(requestBody).build();
+        SearchRequest searchRequest = SearchRequest.newBuilder().addIndex(index).setSearchRequestBody(requestBody).build();
         SearchServiceGrpc.SearchServiceBlockingStub stub = SearchServiceGrpc.newBlockingStub(channel);
         return stub.search(searchRequest);
     }