Update opentelemetry-instrumentation-vertexai version to v2.1b0 (#3286)

Co-authored-by: Aaron Abbott <[email protected]>

Author: opentelemetrybot

instrumentation-genai/opentelemetry-instrumentation-vertexai/CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+## Version 2.0b0 (2025-02-21)
+
 - Added Vertex AI spans for request parameters
   ([#3192](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3192))
 - Initial VertexAI instrumentation

instrumentation-genai/opentelemetry-instrumentation-vertexai/src/opentelemetry/instrumentation/vertexai/version.py

@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "2.0b0.dev"
+__version__ = "2.1b0.dev"