chore(deps): update terraform terraform-ibm-modules/landing-zone/ibm to v5.28.0

[terraform-ibm-modules-ops]

This PR contains the following updates:

Package	Type	Update	Change
terraform-ibm-modules/landing-zone/ibm (source)	module	minor	5.27.0 -> 5.28.0

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Release Notes

terraform-ibm-modules/terraform-ibm-landing-zone (terraform-ibm-modules/landing-zone/ibm)

### [`v5.28.0`](https://togithub.com/terraform-ibm-modules/terraform-ibm-landing-zone/releases/tag/v5.28.0) [Compare Source](https://togithub.com/terraform-ibm-modules/terraform-ibm-landing-zone/compare/v5.27.1...v5.28.0) ##### Features - added support to specify the operating system for OCP cluster workers using new input `operating_system` ([#​848](https://togithub.com/terraform-ibm-modules/terraform-ibm-landing-zone/issues/848)) ([9eda4cd](https://togithub.com/terraform-ibm-modules/terraform-ibm-landing-zone/commit/9eda4cd659c0da3fa3e90d7fde9410dd3dfdb1a9)) ### [`v5.27.1`](https://togithub.com/terraform-ibm-modules/terraform-ibm-landing-zone/releases/tag/v5.27.1) [Compare Source](https://togithub.com/terraform-ibm-modules/terraform-ibm-landing-zone/compare/v5.27.0...v5.27.1) ##### Bug Fixes - fixed the `resource_group_names` and `resource_group_data` outputs to ensure they include prefix ([#​852](https://togithub.com/terraform-ibm-modules/terraform-ibm-landing-zone/issues/852)) ([677a996](https://togithub.com/terraform-ibm-modules/terraform-ibm-landing-zone/commit/677a996b5394e13645bb1ebafd41bfe3cc75630d))

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