chore(deps): update terraform googlecloudplatform/lb-internal/google to v6

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
GoogleCloudPlatform/lb-internal/google (source)	module	major	~> 5.0 -> ~> 6.0

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Release Notes

terraform-google-modules/terraform-google-lb-internal (GoogleCloudPlatform/lb-internal/google)

### [`v6.0.0`](https://togithub.com/terraform-google-modules/terraform-google-lb-internal/blob/HEAD/CHANGELOG.md#600-2024-05-03) [Compare Source](https://togithub.com/terraform-google-modules/terraform-google-lb-internal/compare/v5.1.0...v6.0.0) ##### ⚠ BREAKING CHANGES - make parameters optional in healthcheck ([#​137](https://togithub.com/terraform-google-modules/terraform-google-lb-internal/issues/137)) - Simplify use of the all_ports argument ([#​132](https://togithub.com/terraform-google-modules/terraform-google-lb-internal/issues/132)) ##### Features - Enable user to enable mirroring collector capability. ([#​135](https://togithub.com/terraform-google-modules/terraform-google-lb-internal/issues/135)) ([a92980c](https://togithub.com/terraform-google-modules/terraform-google-lb-internal/commit/a92980cba7d81ed3fae323fcd764b9a21fb77be5)) - make parameters optional in healthcheck ([#​137](https://togithub.com/terraform-google-modules/terraform-google-lb-internal/issues/137)) ([535eff6](https://togithub.com/terraform-google-modules/terraform-google-lb-internal/commit/535eff640091d98d23b8444ddbc737ebf3717b0f)) - Simplify use of the all_ports argument ([#​132](https://togithub.com/terraform-google-modules/terraform-google-lb-internal/issues/132)) ([e25dbbc](https://togithub.com/terraform-google-modules/terraform-google-lb-internal/commit/e25dbbcf5602aa9508a6355dd45faa20f0f0afb7))

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