POM: pin to latest scijava-common: 2.28.0
POM: pin to latest scijava-common: 2.28.0

This update is needed so that the DefaultLegacyHooks can inform the
SciJava UsageService of legacy plugin executions:

1) The forthcoming LegacyPlugInInfo (a bag of metadata about a legacy
   plugin) needs to implement new interfaces: Locatable and Versioned.

2) The DefaultLegacyHooks needs to call UsageService#increment.

imagej/imagej-legacy,imagej/imagej-legacy,imagej/imagej-legacy,imagej/imagej-legacy