Prepare azure-monitor-opentelemetry-exporter release (Azure#30777)

* Update changelog

* Update sdk/monitor/azure-monitor-opentelemetry-exporter/CHANGELOG.md

Co-authored-by: Trask Stalnaker <trask.stalnaker@gmail.com>

* Update release date

Co-authored-by: Trask Stalnaker <trask.stalnaker@gmail.com>

Author: heyams

sdk/monitor/azure-monitor-opentelemetry-exporter/CHANGELOG.md

@@ -1,14 +1,12 @@
 # Release History
 
-## 1.0.0-beta.6 (Unreleased)
+## 1.0.0-beta.6 (2022-09-06)
 
-### Features Added
-
-### Breaking Changes
-
-### Bugs Fixed
-
-### Other Changes
+### New Features
+- Add metrics exporter.
+- Add logs exporter.
+- Add disk persistence and retries for ingestion failures.
+- Add heartbeat telemetry.
 
 ## 1.0.0-beta.5 (2021-11-12)
 

sdk/monitor/azure-monitor-opentelemetry-exporter/README.md

@@ -23,7 +23,7 @@ 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.5</version>
+  <version>1.0.0-beta.6</version>
 </dependency>
 ```
 [//]: # ({x-version-update-end})