Update to Central Portal Publishing Maven plugin

Replace old nexus-staging-maven-plugin with new central-publishing-maven-plugin for compatibility with Sonatype Central Portal.

Author: namedgraph

pom.xml

@@ -231,14 +231,14 @@
                 </configuration>
             </plugin>
             <plugin>
-                <groupId>org.sonatype.plugins</groupId>
-                <artifactId>nexus-staging-maven-plugin</artifactId>
-                <version>1.6.12</version>
+                <groupId>org.sonatype.central</groupId>
+                <artifactId>central-publishing-maven-plugin</artifactId>
+                <version>0.6.0</version>
                 <extensions>true</extensions>
                 <configuration>
-                    <serverId>ossrh-staging-api</serverId>
-                    <nexusUrl>https://ossrh-staging-api.central.sonatype.com</nexusUrl>
-                    <autoReleaseAfterClose>true</autoReleaseAfterClose>
+                    <publishingServerId>central-portal-snapshots</publishingServerId>
+                    <autoPublish>true</autoPublish>
+                    <waitUntil>published</waitUntil>
                 </configuration>
             </plugin>
             <plugin>