Bump Terraform required_version to v1.3-v1.5

[NimJay]

• Please see Google-internal link here: go/nimjay-2024-08-30-terraform-version
• We need to ensure our JSS (Jump Start Solution) Blueprints (Terraform modules) use a required_version (Terraform version) between 1.3 (inclusive) and 1.5 (inclusive).
• Ideally, we'd use >= 1.5 since "v1.5 is currently identified as the optimum for maximum compatibility." Source.
• Example: We've already done this for JSS 6.1/6.2/6.3: feat: Update Terraform required_version to >= 1.5 terraform-cloud-client-api#169.

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[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 7 days