Added eu-es region in registry mapping endpoints and readme and input var

[vbontempi]

Description

• Add support for eu-es region in container-registry CRN for VPE creation
• Fix documentation missing of subnet ID in the subnets list in input
• Removed optional from zone attribute in subnets list input as it is used when building VPE IP names

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Release notes content

Add support for eu-es region in container-registry CRN for VPE creation
Fix documentation missing of subnet ID in the subnets list in input
Removed optional from zone attribute in subnets list input

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[vbontempi]

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[terraform-ibm-modules-ops]

🎉 This PR is included in version 4.2.0 🎉

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