Hotfix: previously updated policy not updated in initiative (low priority)

[Springstone]

Overview/Summary

This pull request includes a change to the src/resources/Microsoft.Authorization/policySetDefinitions/Deploy-Sql-Security.json file. The policyDefinitionId for SqlDbVulnerabilityAssessmentsDeploySqlSecurity has been updated to include a date suffix _20230706, likely indicating a version update or specific configuration for this policy definition.

Testing URLs

Azure Public

As part of this Pull Request I have

• [x] Checked for duplicate Pull Requests
• [x] Associated it with relevant issues, for tracking and closure.
• [x] Ensured my code/branch is up-to-date with the latest changes in the main branch
• [x] Performed testing and provided evidence.
• [x] Ensured contribution guidance is followed.
• [x] Updated relevant and associated documentation.
• [x] Updated the "What's New?" wiki page (located: /docs/wiki/whats-new.md)

[Springstone]

Addresses https://github.com/Azure/Enterprise-Scale/issues/1646