Prepare for beta.1 release (Azure#25376)

### Packages impacted by this PR
@azure/web-pubsub-client-protobuf

### Issues associated with this PR


### Describe the problem that is addressed by this PR
Prepare for beta release

### 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?


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


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


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

### Checklists
- [ ] 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)_
- [ ] Added a changelog (if necessary)

Author: zackliu

sdk/web-pubsub/ci.yml

@@ -38,3 +38,5 @@ extends:
         safeName: webpubsubexpress
       - name: azure-web-pubsub-client
         safeName: webpubsubclient
+      - name: azure-web-pubsub-client-protobuf
+        safeName: webpubsubclientprotobuf

sdk/web-pubsub/web-pubsub-client-protobuf/CHANGELOG.md

@@ -1,5 +1,5 @@
 # Release History
 
-## 1.0.0-beta.1 (Unreleased)
+## 1.0.0-beta.1 (2023-03-28)
 ### Features Added
 - Initial beta release