Fix a Rubocop offense

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

spec/workers/new_issue_worker_spec.rb

@@ -41,7 +41,7 @@ describe NewIssueWorker do
       let(:issue) { create(:issue, project: project, description: "issue for #{mentioned.to_reference}") }
 
       it 'creates a new event record' do
-        expect{ worker.perform(issue.id, user.id) }.to change { Event.count }.from(0).to(1)
+        expect { worker.perform(issue.id, user.id) }.to change { Event.count }.from(0).to(1)
       end
 
       it 'creates a notification for the assignee' do

spec/workers/new_merge_request_worker_spec.rb

@@ -43,7 +43,7 @@ describe NewMergeRequestWorker do
       end
 
       it 'creates a new event record' do
-        expect{ worker.perform(merge_request.id, user.id) }.to change { Event.count }.from(0).to(1)
+        expect { worker.perform(merge_request.id, user.id) }.to change { Event.count }.from(0).to(1)
       end
 
       it 'creates a notification for the assignee' do