Update VE core submodule to master (bc9ae1f)

New changes:
98fb46e Update OOjs UI to v0.1.0-pre (8ad150e4e7)
d2a6e4c ve.ui.AnnotationInspector: Explicitly permit inserting non-text data

Change-Id: I408cd23596641ba48b8f00ae8d15b482dfb62215