Use :request_store hooks on specs

spec/controllers/projects/jobs_controller_spec.rb

spec/controllers/projects/merge_requests_controller_spec.rb

spec/controllers/projects/pipelines_controller_spec.rb

spec/lib/banzai/filter/abstract_reference_filter_spec.rb

spec/lib/banzai/issuable_extractor_spec.rb

spec/lib/banzai/reference_parser/user_parser_spec.rb

spec/models/concerns/routable_spec.rb

spec/models/project_team_spec.rb

spec/serializers/pipeline_serializer_spec.rb

spec/spec_helper.rb