What is the highest resolution external display that can be driven by the Late 2012 13" Retina MacBook Pro
If you are talking about the non-Retina version, then the highest it can go is 2560 x 1600 pixels for one display. (Source (under "Graphics and Video Support")).

If you are talking about the Retina version, then it can also go up to 2560 x 1600 pixels, but up to two displays. (Source (under "Graphics and Video Support"))

Conclusion: you should still be able to use the display in question, but your Mac will only let your monitor go up to 2560 x 1600.