Bump version to 2.11.0+gr.1

Author: jgiannuzzi

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "confluent-kafka"
-version = "2.11.0+gr"
+version = "2.11.0+gr.1"
 description = "Confluent's Python client for Apache Kafka"
 classifiers = [
     "Development Status :: 5 - Production/Stable",