net-mgmt/netbox: Update to 4.6.5

Changelog:

Enhancements:

• Add MDC connector type for fiber ports and cables
• Provide a REST API method to update or overwrite an existing custom script module
• Enforce a lower maximum uploaded image size (50 megapixels) than the Pillow default
• Add Korean language support

Performance Improvements:

• Add a prefetch hint to the GraphQL tags field to avoid N+1 queries on list endpoints
• Cache serializers to avoid repeated reinstantiation on the cables list REST API endpoint

Bug Fixes:

• Correct the OpenAPI schema for relation counts on nested (brief) object representations
• Return the configured maintenance mode message for REST API requests
• Honor RAM_BASE_UNIT for the default memory of a virtual machine type
• Restore the available IPs button for users with constrained permissions
• Avoid name collisions when a custom script's filename matches a core app label
• Fix uncaught ValueError (HTTP 500) when an invalid filter_id query parameter is provided
• Remove persistent scrollbar on the navigation menu in Chrome
• Ensure shared objects are treated consistently across the UI and REST API
• Use a theme-aware color for interface list row separators in dark mode
• Fix ValueError exception when viewing background tasks under RQ 2.10
• Require the "change" permission (rather than "add") when editing objects via the bulk import form
• Ensure custom link names are escaped when rendering fails
• Fix ValueError raised by object-level permission checks for cross-app proxy models
• Explicitly disable autoescaping for config templates rendered via SandboxedEnvironment
• Escape the exception message in the render_widget template tag before marking it safe

https://github.com/netbox-community/netbox/releases/tag/v4.6.5

MFH: 2026Q3
(cherry picked from commit 31162e58a5c24cfee8eb8d069ee52bb925974001)