Increment package version after release of azure-cosmos (#46131)

Author: azure-sdk

sdk/cosmos/azure-cosmos/CHANGELOG.md

@@ -1,5 +1,15 @@
 ## Release History
 
+### 4.16.0b3 (Unreleased)
+
+#### Features Added
+
+#### Breaking Changes
+
+#### Bugs Fixed
+
+#### Other Changes
+
 ### 4.16.0b2 (2026-04-04)
 
 #### 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 = "4.16.0b2"
+VERSION = "4.16.0b3"