Fix Apache Lucene version for 2.6.0 (opensearch-project#6118)

Signed-off-by: Andriy Redko <andriy.redko@aiven.io>

Author: reta

server/src/main/java/org/opensearch/Version.java

@@ -89,7 +89,7 @@ public class Version implements Comparable<Version>, ToXContentFragment {
 
     // UNRELEASED
     public static final Version V_2_4_2 = new Version(2040299, org.apache.lucene.util.Version.LUCENE_9_4_2);
-    public static final Version V_2_6_0 = new Version(2060099, org.apache.lucene.util.Version.LUCENE_9_4_2);
+    public static final Version V_2_6_0 = new Version(2060099, org.apache.lucene.util.Version.LUCENE_9_5_0);
     public static final Version V_3_0_0 = new Version(3000099, org.apache.lucene.util.Version.LUCENE_9_5_0);
     public static final Version CURRENT = V_3_0_0;