Update typespec, azure_core versions

[heaths]

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[Copilot]

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sdk/core/azure_core/README.md:92

• Verify that the change from 'SecretBundle' to 'Secret' correctly reflects the new API and is consistently applied across the code example.

use azure_security_keyvault_secrets::{models::Secret, SecretClient};

sdk/core/azure_core/README.md:187

• Confirm that the updated function 'list_secret_properties' handles pagination as expected and is compatible with the revised API behavior.

let mut pager = client.list_secret_properties(None)?.into_stream();

[azure-sdk]

API change check

API changes are not detected in this pull request.