Fix a failure in Projects::UpdateRepositoryStorageService spec

Signed-off-by: Rémy Coutable <remy@rymai.me>

spec/services/projects/update_repository_storage_service_spec.rb

@@ -26,7 +26,7 @@ describe Projects::UpdateRepositoryStorageService, services: true do
       FileUtils.rm_rf('tmp/tests/storage_b')
     end
 
-    context 'without wiki' do
+    context 'without wiki', skip_gitaly_mock: true do
       let(:project) { create(:project, repository_storage: 'a', repository_read_only: true, wiki_enabled: false) }
 
       context 'when the move succeeds' do
@@ -62,7 +62,7 @@ describe Projects::UpdateRepositoryStorageService, services: true do
       end
     end
 
-    context 'with wiki' do
+    context 'with wiki', skip_gitaly_mock: true do
       let(:project) { create(:project, repository_storage: 'a', repository_read_only: true, wiki_enabled: true) }
 
       before do