chore(deps): update terraform gitlab to v18.3.0

This MR contains the following updates:

Package	Type	Update	Change
gitlab (source)	required_provider	minor	18.2.0 -> 18.3.0
gitlab (source)	required_provider	major	17.11.0 -> 18.3.0

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Release Notes

gitlabhq/terraform-provider-gitlab (gitlab)

v18.3.0

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FEATURES (3 changes)

• Add new gitlab_group_deploy_token and gitlab_project_deploy_token resources. The existing generic gitlab_deploy_token resource has now been deprecated. by @​mness (merge request)
• Add new gitlab_group_saml_links datasource by @​heidi.berry (merge request)
• Support client-go config file for provider authentication. See more information here: https://gitlab.com/gitlab-org/api/client-go#use-the-config-package-experimental by @​timofurrer (merge request)

IMPROVEMENTS (6 changes)

• resource/gitlab_project_level_notifications: Update to handle unknown value validation by @​PatrickRice (merge request)
• resource/gitlab_group: Add support for administrator to project_creation_level by @​aldo.salas1 (merge request)
• resource/gitlab_group_security_policy_attachments: This resource now checks permissions prior to adding the policy, and fails with a informative error if permissions are missing by @​PatrickRice (merge request)
• resource/gitlab_project_security_policy_attachments: This resource now checks permissions prior to adding the policy, and fails with a informative error if permissions are missing by @​PatrickRice (merge request)
• resource/gitlab_deploy_token: Add support for previously missing scope options by @​mness (merge request)
• resource/gitlab_instance_service_account: Allow instance service accounts to be created without username and/or name by @​heidi.berry (merge request)

BUG FIXES (6 changes)

• resource/gitlab_global_level_notifications: Update to handle unknown value validation by @​PatrickRice (merge request)
• resource/gitlab_project_level_notifications: Update to handle unknown value validation by @​PatrickRice (merge request)
• resource/gitlab_project_protected_environment: Fix error in protected environment using unknown deploy attributes by @​PatrickRice (merge request)
• resource/gitlab_project_integration_github: Fix a provider panic that occurs when importing a non-existent integration by @​heidi.berry (merge request)
• resource/gitlab_group_dependency_proxy: Fixed a bug where importing using an import block caused an immediate replace by @​PatrickRice (merge request)
• resource/gitlab_group: Fixed an issue with permanently_remove_on_delete that occurred when deleting groups on GitLab versions later than 18.0 by @​heidi.berry (merge request)

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