OK, here's something that might work, but is prone to render your device MALF (need to reflash), because of aegis file protection:
You could of course copy that file to PC, open it with a hexeditor, search for "10_1_105_6" and edit to a higher value. Make sure to only overwrite characters and not change the file length.
Actual version on N9 is 10.1.105.6, not sure which higher versions might work, here's a list: http://helpx.adobe.com/flash-player/...-versions.html

EDIT: Some furter info I gathered on IRC:
After editing, refhashlist has to be re-signed. There is even a refhashlist.pl perl script somewhere on the forum that could do the magic for you if your not that familiar with aegis magic.
Basicly after edit, you just take sha1sum of the new library, update the checksum in refhashlist file and then resign the refhashlist to avoid malf.

Would this work? Anybody willing to test?