fix(efs): correct EFS policy

[nhs-oliverslater]

Description

Update flow log configuration and validation for consumer-managed destinations in the VPC module. Remove IP restrictions and clarify TLS enforcement in the EFS documentation and policy. Improve security statement management in the EFS policy document.

Context

These changes enhance the flexibility and security of flow log management, ensuring proper validation for destination types. The updates to EFS documentation and policies address security concerns and improve clarity.

Type of changes

• Refactoring (non-breaking change)

• New feature (non-breaking change which adds functionality)

• Breaking change (fix or feature that would change existing functionality)

• Bug fix (non-breaking change which fixes an issue)

Checklist

• I am familiar with the contributing guidelines

• I have followed the code style of the project

• I have added tests to cover my changes

• I have updated the documentation accordingly

• This PR is a result of pair or mob programming

---

Sensitive Information Declaration

To ensure the utmost confidentiality and protect your and others privacy, we kindly ask you to NOT including PII (Personal Identifiable Information) / PID (Personal Identifiable Data) or any other sensitive data in this PR (Pull Request) and the codebase changes. We will remove any PR that do contain any sensitive information. We really appreciate your cooperation in this matter.

• I confirm that neither PII/PID nor sensitive data are included in this PR and the codebase changes.