[Cosmos] Changelog for 4.14.0b1 release (#42002)

* Update CHANGELOG.md

* version update

Author: simorenoh

sdk/cosmos/azure-cosmos/CHANGELOG.md

@@ -1,6 +1,6 @@
 ## Release History
 
-### 4.13.0b3 (Unreleased)
+### 4.14.0b1 (2025-07-14)
 
 #### Features Added
 * Added option to enable automatic retries for write operations. See [PR 41272](https://github.com/Azure/azure-sdk-for-python/pull/41272).
@@ -12,8 +12,6 @@
 * Fixed bug where replacing manual throughput using `ThroughputProperties` would not work. See [PR 41564](https://github.com/Azure/azure-sdk-for-python/pull/41564)
 * Fixed bug where constantly raising Service Request Error Exceptions would cause the Service Request Retry Policy to indefinitely retry the request during a query or when a request was sent without a request object. See [PR 41804](https://github.com/Azure/azure-sdk-for-python/pull/41804)
 
-#### Other Changes
-
 ### 4.13.0b2 (2025-06-18)
 
 #### Bugs Fixed

sdk/cosmos/azure-cosmos/azure/cosmos/_version.py

@@ -19,4 +19,4 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-VERSION = "4.13.0b3"
+VERSION = "4.14.0b1"