Bump ignite-core from 2.1.0 to 2.6.0 in /ambari-metrics-timelineservice

Bumps ignite-core from 2.1.0 to 2.6.0.

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/ambari-metrics-timelineservice/pom.xml b/ambari-metrics-timelineservice/pom.xml
index cacece9..7c4c2f3 100644
--- a/ambari-metrics-timelineservice/pom.xml
+++ b/ambari-metrics-timelineservice/pom.xml
@@ -801,7 +801,7 @@
     <dependency>
       <groupId>org.apache.ignite</groupId>
       <artifactId>ignite-core</artifactId>
-      <version>2.1.0</version>
+      <version>2.6.0</version>
       <exclusions>
         <exclusion>
           <artifactId>ignite-shmem</artifactId>