Changed project metadata to use group email address (#2275)

Author: technige

setup.py

@@ -62,10 +62,8 @@
     long_description=long_description,
     long_description_content_type="text/x-rst",
     version=package_version,
-    author="Honza Král, Nick Lang",
-    author_email="[email protected], [email protected]",
-    maintainer="Clients Team",
-    maintainer_email="[email protected]",
+    author="Elastic Client Library Maintainers",
+    author_email="[email protected]",
     project_urls={
         "Documentation": "https://elasticsearch-py.readthedocs.io",
         "Source Code": "https://github.com/elastic/elasticsearch-py",