release-version: invalidate ImageJ Maven cache for nar-maven-plugin

The nar-maven-plugin is deployed to OSS Sonatype; ImageJ Maven's Nexus
caches copies from there. After deploying, however, let's invalidate
that cache because it is out-of-date.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
release-version: deploy scijava-common to OSS Sonatype

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