Fix spec failing on certain times

This is because the worker runs for each DB depending on the minute, so
we get flakiness for test environments with multiple databases setup.

spec/workers/loose_foreign_keys/cleanup_worker_spec.rb

@@ -102,8 +102,22 @@ RSpec.describe LooseForeignKeys::CleanupWorker do
     loose_fk_parent_table_2.delete_all
   end
 
-  it 'cleans up all rows' do
+  def perform_for(db:)
+    time = Time.current.midnight
+
+    if db == :main
+      time += 2.minutes
+    elsif db == :ci
+      time += 3.minutes
+    end
+
+    travel_to(time) do
       described_class.new.perform
+    end
+  end
+
+  it 'cleans up all rows' do
+    perform_for(db: :main)
 
     expect(loose_fk_child_table_1_1.count).to eq(0)
     expect(loose_fk_child_table_1_2.where(parent_id_with_different_column: nil).count).to eq(4)
@@ -118,7 +132,7 @@ RSpec.describe LooseForeignKeys::CleanupWorker do
     it 'cleans up all rows' do
       expect(LooseForeignKeys::BatchCleanerService).to receive(:new).exactly(:twice).and_call_original
 
-      described_class.new.perform
+      perform_for(db: :main)
 
       expect(loose_fk_child_table_1_1.count).to eq(0)
       expect(loose_fk_child_table_1_2.where(parent_id_with_different_column: nil).count).to eq(4)
@@ -137,7 +151,7 @@ RSpec.describe LooseForeignKeys::CleanupWorker do
     end
 
     it 'cleans up 2 rows' do
-      expect { described_class.new.perform }.to change { count_deletable_rows }.by(-2)
+      expect { perform_for(db: :main) }.to change { count_deletable_rows }.by(-2)
     end
   end