chore: sync go-flashduty sdk

[ysyneu]

Summary

• update go-flashduty dependency to main commit f90c46d
• regenerate CLI commands for the latest OpenAPI surface
• allow generated required body positionals to come from positional args, typed flags, or --data
• add regression coverage for --data examples and explicit --enabled=false

Verification

• make check
• make check-cards
• go test ./internal/cli -run TestGenPositionalRequiredFieldCanComeFromDataOrFlag -count=1
• manual repro: generated --data examples now reach HTTP instead of Args validation