Migrate deployment from oss.sonatype.org to central.sonatype.com

Replace nexus-staging-maven-plugin with central-publishing-maven-plugin
and update all repository URLs to the new Sonatype Central portal.
Upgrade maven-gpg-plugin from 1.6 to 3.2.8 with bestPractices enabled.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: gnodet

pom.xml

@@ -89,14 +89,12 @@
 
     <distributionManagement>
         <repository>
-            <id>sonatype-nexus-staging</id>
-            <name>Sonatype Staging Repository</name>
-            <url>https://oss.sonatype.org/service/local/staging/deploy/maven2</url>
+            <id>central</id>
+            <url>https://central.sonatype.com</url>
         </repository>
         <snapshotRepository>
-            <id>sonatype-nexus-snapshots</id>
-            <name>Sonatype Snapshot Repository</name>
-            <url>https://oss.sonatype.org/content/repositories/snapshots</url>
+            <id>central</id>
+            <url>https://central.sonatype.com/repository/maven-snapshots</url>
         </snapshotRepository>
     </distributionManagement>
 
@@ -134,9 +132,9 @@
             <snapshots>
                 <enabled>true</enabled>
             </snapshots>
-            <id>sonatype-nexus-snapshots</id>
-            <name>Sonatype Snapshot Repository</name>
-            <url>https://oss.sonatype.org/content/repositories/snapshots</url>
+            <id>central-snapshots</id>
+            <name>Central Snapshot Repository</name>
+            <url>https://central.sonatype.com/repository/maven-snapshots</url>
         </repository>
     </repositories>
 
@@ -326,13 +324,14 @@
                 <version>3.0.0-M1</version>
             </plugin>
             <plugin>
-                <groupId>org.sonatype.plugins</groupId>
-                <artifactId>nexus-staging-maven-plugin</artifactId>
-                <version>1.6.8</version>
+                <groupId>org.sonatype.central</groupId>
+                <artifactId>central-publishing-maven-plugin</artifactId>
+                <version>0.9.0</version>
                 <extensions>true</extensions>
                 <configuration>
-                    <serverId>ossrh</serverId>
-                    <nexusUrl>https://oss.sonatype.org/</nexusUrl>
+                    <publishingServerId>central</publishingServerId>
+                    <autoPublish>true</autoPublish>
+                    <waitUntil>published</waitUntil>
                 </configuration>
             </plugin>
             <plugin>
@@ -410,7 +409,10 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-gpg-plugin</artifactId>
-                        <version>1.6</version>
+                        <version>3.2.8</version>
+                        <configuration>
+                            <bestPractices>true</bestPractices>
+                        </configuration>
                         <executions>
                             <execution>
                                 <id>sign-artifacts</id>