fix: Fixes Auditing resource

[lantoli]

Fixes Auditing resource

Jira ticket: CLOUDP-246467

Link to any related issue(s): https://github.com/mongodb/awscdk-resources-mongodbatlas/issues/265

Type of change:

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

Required Checklist:

• [x] I have signed the MongoDB CLA
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] I have added any necessary documentation (if appropriate)
• [x] I have run make fmt and formatted my code
• [x] I have tested the CDK constructor in a CFN stack. See TESTING.md
• [x] If changes include removal or addition of 3rd party GitHub actions, I updated our internal document. Reach out to the APIx Integration slack channel to get access to the internal document.

Further comments