No, I haven’t unfortunately, and it would take some effort to get every detail right as they have different skills and generally, Traveller isn’t based on advantages/disadvantages traits in the same way as GURPS.
I’d suggest that Strength, Dexterity, Health (Endurance) and IQ (Intelligence) could be converted to Traveller by simply multiplying them each by 2/3. Education isn’t really a thing in GURPS, so you’d have no direct conversion (roll again?) and Social Standing could probably be worked out by GURPS’ social traits somehow. Skills could be read as the number added onto the GURPS characteristic base in each case.
That’s about it from me.