pom: Change server id for publication to Maven Central

As OSSRH does not exist anymore, change the server id accordingly.
This id is just used to relate the credentials set in publish.yml with
the server defined in pom.xml.

Author: bertrand-lorentz

.github/workflows/publish.yml

@@ -29,7 +29,7 @@ jobs:
         with:
           java-version: '11'
           distribution: 'adopt'
-          server-id: ossrh
+          server-id: central
           server-username: MAVEN_USERNAME
           server-password: MAVEN_PASSWORD
       - name: Publish to the Maven Central Repository

pom.xml

@@ -554,7 +554,7 @@
               <artifactId>central-publishing-maven-plugin</artifactId>
               <extensions>true</extensions>
               <configuration>
-                <publishingServerId>ossrh</publishingServerId>
+                <publishingServerId>central</publishingServerId>
                 <autoPublish>true</autoPublish>
               </configuration>
            </plugin>