Update dependency version

docs-ref-services/preview/monitor-opentelemetry-exporter-readme.md

@@ -34,7 +34,7 @@ For more information, please read [introduction to Application Insights][applica
 <dependency>
   <groupId>com.azure</groupId>
   <artifactId>azure-monitor-opentelemetry-exporter</artifactId>
-  <version>1.0.0-beta.6</version>
+  <version>1.0.0-beta.8</version>
 </dependency>
 ```
 [//]: # ({x-version-update-end})