Fix new specs failing after changing FactoryBot

These specs require some associations to be persisted

ee/spec/replicators/geo/snippet_repository_replicator_spec.rb

@@ -3,7 +3,7 @@
 require 'spec_helper'
 
 RSpec.describe Geo::SnippetRepositoryReplicator do
-  let(:model_record) { build(:snippet_repository) }
+  let(:model_record) { build(:snippet_repository, snippet: create(:snippet)) }
 
   include_examples 'a repository replicator'
 end

ee/spec/services/ee/git/wiki_push_service_spec.rb

@@ -48,7 +48,8 @@ RSpec.describe Git::WikiPushService do
       end
 
       context 'with a group wiki' do
-        let_it_be(:wiki) { build(:group_wiki) }
+        let_it_be(:group) { create(:group) }
+        let_it_be(:wiki) { build(:group_wiki, group: group) }
 
         it 'does not trigger a wiki update' do
           expect(wiki).not_to receive(:index_wiki_blobs)

ee/spec/workers/post_receive_spec.rb

@@ -137,7 +137,8 @@ RSpec.describe PostReceive do
     end
 
     context 'with a group wiki' do
-      let(:wiki) { build(:group_wiki) }
+      let_it_be(:group) { create(:group) }
+      let(:wiki) { build(:group_wiki, group: group) }
 
       it 'calls Git::WikiPushService#execute' do
         expect_next_instance_of(::Git::WikiPushService) do |service|

spec/finders/ci/pipelines_for_merge_request_finder_spec.rb

@@ -122,7 +122,7 @@ RSpec.describe Ci::PipelinesForMergeRequestFinder do
     end
 
     context 'with unsaved merge request' do
-      let(:merge_request) { build(:merge_request) }
+      let(:merge_request) { build(:merge_request, source_project: create(:project, :repository)) }
 
       let!(:pipeline) do
         create(:ci_empty_pipeline, project: project,

spec/serializers/ci/trigger_serializer_spec.rb

@@ -6,7 +6,7 @@ RSpec.describe Ci::TriggerSerializer do
   describe '#represent' do
     let(:represent) { described_class.new.represent(trigger) }
 
-    let(:trigger) { build(:ci_trigger) }
+    let(:trigger) { build_stubbed(:ci_trigger) }
 
     it 'matches schema' do
       expect(represent.to_json).to match_schema('entities/trigger')