docs(playwrighttesting): CHANGELOG for 1.0.0-beta.3 release for micro…

…soft-playwright-testing (#31093)

### Packages impacted by this PR
@azure/microsoft-playwright-testing

### Issues associated with this PR


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there are more than one possible design, why was the one in this PR
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### Are there test cases added in this PR? _(If not, why?)_


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### Checklists
- [ ] Added impacted package name to the issue description
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sdk/playwrighttesting/microsoft-playwright-testing/CHANGELOG.md

@@ -1,18 +1,17 @@
 # Release History
 
-## 1.0.0-beta.3 (Unreleased)
+## 1.0.0-beta.3 (2024-09-16)
 
-### Features Added
-
-### Breaking Changes
+This release provides better error messaging and error handling by improving logging.
 
 ### Bugs Fixed
 
-### Other Changes
+- Optimized test result publishing by reusing the Sas uri till it's expiry.
+- Fixed unexpected process termination by improving error handling of API used to publish test results.
 
 ## 1.0.0-beta.2 (2024-09-12)
 
-This release updates the Microsoft Playwright Testing library documentation and improves error messages. 
+This release updates the Microsoft Playwright Testing library documentation and improves error messages.
 
 ### Bugs Fixed