azurerm_key_vault_secret : remove nanosecond precision to prevent expiration_date parsing errors

[sinbai]

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Description

Remove nanosecond precision to prevent expiration_date parsing errors.

PR Checklist

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Changes to existing Resource / Data Source

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Change Log

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• azurerm_key_vault_secret - remove nanosecond precision to prevent expiration_date parsing errors [azurerm_key_vault_secret with far-future expiration date still overflows #30034]

This is a (please select all that apply):

• Bug Fix
• New Feature (ie adding a service, resource, or data source)
• Enhancement
• Breaking Change

Related Issue(s)

Fixes #30034

Rollback Plan

If a change needs to be reverted, we will publish an updated version of the provider.

Changes to Security Controls

Are there any changes to security controls (access controls, encryption, logging) in this pull request? If so, explain.

Note

If this PR changes meaningfully during the course of review please update the title and description as required.

[mbfrahry]

I'm having trouble recreating the linked issue so the test you've written succeeds on main for me. Could you confirm that the test you've written fails on main? I'm also seeing the same issue with your fix and what's on main with the original issues 9999-12-31T00:00:00Z expiration date