Add loose foreign key for Terraform state versions

Changelog: changed

app/models/ci/build.rb

@@ -59,7 +59,7 @@ class Build < Ci::Processable
     has_one :runner_session, class_name: 'Ci::BuildRunnerSession', validate: true, inverse_of: :build
     has_one :trace_metadata, class_name: 'Ci::BuildTraceMetadata', inverse_of: :build
-    has_many :terraform_state_versions, class_name: 'Terraform::StateVersion', dependent: :nullify, inverse_of: :build, foreign_key: :ci_build_id # rubocop:disable Cop/ActiveRecordDependent
+    has_many :terraform_state_versions, class_name: 'Terraform::StateVersion', inverse_of: :build, foreign_key: :ci_build_id
     accepts_nested_attributes_for :runner_session, update_only: true
     accepts_nested_attributes_for :job_variables

lib/gitlab/database/gitlab_loose_foreign_keys.yml

@@ -41,3 +41,7 @@ pages_deployments:
   - table: ci_builds
     column: ci_build_id
     on_delete: async_nullify
+terraform_state_versions:
+  - table: ci_builds
+    column: ci_build_id
+    on_delete: async_nullify

spec/db/schema_spec.rb

@@ -81,7 +81,6 @@
     subscriptions: %w[user_id subscribable_id],
     suggestions: %w[commit_id],
     taggings: %w[tag_id taggable_id tagger_id],
-    terraform_state_versions: %w[ci_build_id],
     timelogs: %w[user_id],
     todos: %w[target_id commit_id],
     uploads: %w[model_id],

spec/models/ci/build_spec.rb

@@ -29,7 +29,7 @@
   it { is_expected.to have_one(:deployment) }
   it { is_expected.to have_one(:runner_session) }
   it { is_expected.to have_one(:trace_metadata) }
-  it { is_expected.to have_many(:terraform_state_versions).dependent(:nullify).inverse_of(:build) }
+  it { is_expected.to have_many(:terraform_state_versions).inverse_of(:build) }
   it { is_expected.to validate_presence_of(:ref) }