workaround for OSSRH-66257

[maricn]

if using JDK 16 or JDK 17, the release will fail with the current nexus-staging-maven-plugin.. known bug: https://issues.sonatype.org/browse/OSSRH-66257

workaround (from https://stackoverflow.com/questions/70153962/nexus-staging-maven-plugin-maven-deploy-failed-an-api-incompatibility-was-enco):

export MAVEN_OPTS="--add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.lang.reflect=ALL-UNNAMED --add-opens=java.base/java.text=ALL-UNNAMED --add-opens=java.desktop/java.awt.font=ALL-UNNAMED"

the other workaround to force the plugin to use the xtream dependency causes problems because there are vulnerabilities in the old versions, and the newer versions fail on another error..

Acceptance criteria

• no local workaround needs to be applied in order to release (export MAVEN_OPTS)