Updating change logs for cosmos encryption release 1.0.0-beta.3 (Azure#20959)

* Updating change log for cosmos encryption release 1.0.0-beta.3

* resolving comments

Author: simplynaveen20

sdk/cosmos/azure-cosmos-encryption/CHANGELOG.md

@@ -1,6 +1,8 @@
 ## Release History
 
-## 1.0.0-beta.3 (Unreleased)
+### 1.0.0-beta.3 (2021-04-26)
+#### New Features
+* Todo
 
 
 ### 1.0.0-beta.2 (2021-04-07)

sdk/cosmos/azure-cosmos-encryption/README.md

@@ -9,7 +9,7 @@ The encryption plugin is under development and not ready to be consumed yet.
 <dependency>
   <groupId>com.azure</groupId>
   <artifactId>azure-cosmos-encryption</artifactId>
-  <version>1.0.0-beta.1</version>
+  <version>1.0.0-beta.3</version>
 </dependency>
 ```
 [//]: # ({x-version-update-end})

sdk/cosmos/azure-cosmos/CHANGELOG.md

@@ -1,10 +1,12 @@
 ## Release History
 
-### 4.15.0-beta.2 (Unreleased)
+### 4.15.0-beta.2 (2021-04-26)
+#### Key Bug Fixes
+* No changes from previous version, releasing for compatibility issues with cosmos encryption modules.
 
 ### 4.15.0-beta.1 (2021-04-07)
 #### Key Bug Fixes
-* No changes from previous version, releasing for compatibility issues with cosmos encrytion modules.
+* No changes from previous version, releasing for compatibility issues with cosmos encryption modules.
 
 ### 4.14.0 (2021-04-06)
 #### New Features