Prepare azcore v1.3.0 for release (#19759)

Author: chlowell

sdk/azcore/CHANGELOG.md

@@ -1,16 +1,12 @@
 # Release History
 
-## 1.3.0 (Unreleased)
+## 1.3.0 (2023-01-06)
 
 ### Features Added
 * Added `BearerTokenOptions.AuthorizationHandler` to enable extending `runtime.BearerTokenPolicy`
   with custom authorization logic
 * Added `Client` types and matching constructors to the `azcore` and `arm` packages.  These represent a basic client for HTTP and ARM respectively.
 
-### Breaking Changes
-
-### Bugs Fixed
-
 ### Other Changes
 * Updated `internal` module to latest version.
 * `policy/Request.SetBody()` allows replacing a request's body with an empty one