Update Terraform cloudposse/cloudwatch-logs/aws to v0.6.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
cloudposse/cloudwatch-logs/aws (source)	module	minor	0.5.0 -> 0.6.0

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Release Notes

cloudposse/terraform-aws-cloudwatch-logs

### [`v0.6.0`](https://togithub.com/cloudposse/terraform-aws-cloudwatch-logs/releases/0.6.0) [Compare Source](https://togithub.com/cloudposse/terraform-aws-cloudwatch-logs/compare/0.5.0...0.6.0) #### 🚀 Enhancements

Feat: Make IAM Role Optional @​korenyoni (#​24)

#### what * Make IAM role conditional on feature flag. * Run `make github/init`. * Fix unintentional nested array in `stream_arns` output. * Fix usage snippet such that it conforms with other modules. #### why * Not all CloudWatch Logs log group use cases require an IAM role meant for assumption by an EC2 instance. The IAM role should be conditional. * Running `make github/init` updates GHA workflow-related files. * Running `make github/init` updates `context.tf` to the latest distribution from `null-label`, which now has new features such as the `tenant` label. #### references * https://github.com/cloudposse/terraform-null-label/releases/tag/0.25.0

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