[Recorder] Release recorder 3.1.0 (Azure#28917)

### Packages impacted by this PR
`@azure-tools/test-recorder`

### Issues associated with this PR
Azure#28667 

### Describe the problem that is addressed by this PR
Releasing recorder 3.1.0 unblocks the Azure#28667 that upgrades recorder to
4.0.0 with vitest.

sdk/test-utils/recorder/CHANGELOG.md

@@ -1,14 +1,12 @@
 # Release History
 
-## 3.1.0 (Unreleased)
+## 3.1.0 (2023-03-14)
 
 ### Features Added
 
 - Add support for setting `TLSValidationCert` in the Test Proxy Transport.
 - Add a `testPollingOptions` that allow skip polling wait in playback mode.
 
-### Breaking Changes
-
 ### Bugs Fixed
 
 - Fixed a bug where environment variables were not being sanitized correctly when one's original value is a substring of another. [#27187](https://github.com/Azure/azure-sdk-for-js/pull/27187)
@@ -20,6 +18,7 @@
   - Forward mismatch error when recording file cannot be found during `start` call in playback mode
   - Add more descriptive message in the case that the test proxy has not been started before running the tests
 - Ignore `Accept-Language` header for browsers in Playback mode.
+
 ## 3.0.0 (2023-03-07)
 
 ### Features Added