[KYUUBI #7288] Bump Maven 3.9.12

### Why are the changes needed?

Upgrade to the latest version of Maven, so that `build/mvn` can benefit from CDN instead of Aapche archive site.

### How was this patch tested?

Pass GHA.

### Was this patch authored or co-authored using generative AI tooling?

No.

Closes #7288 from pan3793/maven-3.9.12.

Closes #7288

1bb91ef [Cheng Pan] Bump Maven 3.9.12

Authored-by: Cheng Pan <chengpan@apache.org>
Signed-off-by: Cheng Pan <chengpan@apache.org>

Author: pan3793

pom.xml

@@ -114,7 +114,7 @@
     </distributionManagement>
 
     <properties>
-        <maven.version>3.9.11</maven.version>
+        <maven.version>3.9.12</maven.version>
         <maven.compiler.source>8</maven.compiler.source>
         <maven.compiler.target>8</maven.compiler.target>
         <enforcer.maxJdkVersion>8</enforcer.maxJdkVersion>