chore: name the parent POM zstd-java

The aggregator's <name> drove the SonarQube project label ("zstd-parent");
rename it to zstd-java to match the project. artifactId stays zstd-parent
(referenced by every child <parent> block).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: dfa1

pom.xml

@@ -7,7 +7,7 @@
 	<version>0.6-SNAPSHOT</version>
 	<packaging>pom</packaging>
 
-	<name>zstd-parent</name>
+	<name>zstd-java</name>
 	<description>Java FFM (Foreign Function &amp; Memory) bindings for zstd</description>
 	<url>https://github.com/dfa1/zstd-java</url>