fix: Databricks - Updated to latest PE schema - `avm/res/databricks/workspace`

[AlexanderSehr]

Description

• Updated PE implementation to latest schema
• Addressed Bicep warning

Pipeline Reference

Pipeline

Type of Change

• [ ] Update to CI Environment or utlities (Non-module effecting changes)
• [ ] Azure Verified Module updates:
  • [x] Bugfix containing backwards compatible bug fixes, and I have NOT bumped the MAJOR or MINOR version in version.json:
  • [ ] Someone has opened a bug report issue, and I have included "Closes #{bug_report_issue_number}" in the PR description.
  • [ ] The bug was found by the module author, and no one has opened an issue to report it yet.
  • [ ] Feature update backwards compatible feature updates, and I have bumped the MINOR version in version.json.
  • [ ] Breaking changes and I have bumped the MAJOR version in version.json.
  • [ ] Update to documentation

[ChrisSidebotham]

@clintgrove to review