updated docs for 9.0.8 release

Author: adityapinglesf

docs/CHANGELOG.md

@@ -14,6 +14,7 @@ Red Hat images will continue to be published.
 * [9.1.1](#911)
 * [9.1.0.2](#9102)
 * [9.1.0.1](#9101)
+* [9.0.8](#908)
 * [9.0.7](#907)
 * [9.0.6](#906)
 * [9.0.5.1](#9051)
@@ -144,6 +145,16 @@ Red Hat images will continue to be published.
 
 ---
 
+## 9.0.8
+
+#### What's New?
+* Releasing new images to support Splunk Enterprise release.
+
+#### docker-splunk changes:
+* Bumping Splunk version. For details, see [Fixed issues for 9.0.8](https://docs.splunk.com/Documentation/Splunk/9.0.8/ReleaseNotes/Fixedissues#Splunk_Enterprise_9.0.8)
+
+---
+
 ## 9.0.7
 
 #### What's New?