refactor: cross-object referencing and terraform version upgrade

[mukulpalit-ibm]

Description

• No Validation found in the module
• Upgraded the Terraform version to 1.9.0

Release required?

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• Patch release (x.x.X)
• Minor release (x.X.x)
• Major release (X.x.x)

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[mukulpalit-ibm]

/run pipeline

[mukulpalit-ibm]

/run pipeline

[ocofaigh]

/run pipeline

[ocofaigh]

The hook failed:

Add terraform docs section to README......................................Failed
- hook id: terraform_docs
- files were modified by this hook

I'm going to add these changes into #248 and just generate 1 release from that PR. Closing this one