net-mgmt/netbox: Update to 4.5.6

Changelog:

Enhancements:

• Add OSFP224 (1.6T) interface type
• Add 2.5GBASE-X SFP modular interface type
• Improve object change diff styling and layout
• Add 50 Gbps, 800 Gbps, and 1.6 Tbps interface speed options

Bug Fixes:

• Fix resolution of the {module} variable for position fields in nested modules
• Adjust custom field URL filter to support non-standard port numbers
• Fix grouping of owner fields in provider account add/edit forms
• Fix FieldError exception when sorting the circuit group assignment table by the member column
• Use separate add/remove form fields when editing a site or provider with a large number of ASNs assigned

https://github.com/netbox-community/netbox/releases/tag/v4.5.6