[DOCS] Update docusaurus to 3.9

[TomFern]

Documentation Location

Docusaurus 3.9 has been released: we should update once there enough bandwidth.

Release post: https://docusaurus.io/blog/releases/3.9

Type of Documentation Issue

• Missing documentation
• Incorrect information
• Unclear explanation
• Outdated content
• Broken link
• Code example needs update
• Other (please describe): new Docusaurus release

Current State

Running Docusaurus: 3.7

Requested Changes

Running Docusaurus: 3.9

Suggested Content

Additional Information

Affects Version

• Cloud Semaphore
• Community Edition (specify version):