Bump component versions

The following changes were made:
	scifio.version = 0.15.0 (latest io.scif:scifio)
	scifio-bf-compat.version = 1.7.3 (latest io.scif:scifio-bf-compat)
	scifio-ome-xml.version = 0.9.0 (latest io.scif:scifio-ome-xml)

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>