[communication-rooms] Wait for PatchParticipants Rest API calls to co…

…mplete before returning (#31889)

### Packages impacted by this PR
communication-rooms

### Issues associated with this PR

### Describe the problem that is addressed by this PR
'addOrUpdateParticipants' and 'removeParticipants' methods were missing
an await and the methods were returning before the task was getting
completed.

### What are the possible designs available to address the problem? If
there are more than one possible design, why was the one in this PR
chosen?
N/A

### Are there test cases added in this PR? _(If not, why?)_
Existing test cases were modified

### Provide a list of related PRs _(if any)_
N/A

### Command used to generate this PR:**_(Applicable only to SDK release
request PRs)_

### Checklists
- [X] Added impacted package name to the issue description
- [ ] Does this PR needs any fixes in the SDK Generator?** _(If so,
create an Issue in the
[Autorest/typescript](https://github.com/Azure/autorest.typescript)
repository and link it here)_
- [X] Added a changelog (if necessary)

sdk/communication/communication-rooms/CHANGELOG.md

@@ -1,5 +1,11 @@
 # Release History
 
+## 1.1.1 (2024-11-22)
+
+### Bugs Fixed
+
+- Bug fix for 'addOrUpdateParticipants' and 'removeParticipants' methods to wait for the operation to complete before returning
+
 ## 1.1.0 (2024-04-15)
 
 ### Other Changes

sdk/communication/communication-rooms/package.json

@@ -3,7 +3,7 @@
   "sdk-type": "client",
   "author": "Microsoft Corporation",
   "description": "Azure client library for Azure Communication Rooms services",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "engines": {
     "node": ">=18.0.0"
   },