bump moodle2cc to 0.2.9

test plan:
* import the package referenced in the ticket
* should not fail

fixes #CNVS-13417

Change-Id: I1359c789edefa50e78daf2981b15c7823643e3d8
Reviewed-on: https://gerrit.instructure.com/35968
Reviewed-by: Bracken Mosbacker <bracken@instructure.com>
QA-Review: Clare Strong <clare@instructure.com>
Product-Review: Bracken Mosbacker <bracken@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>