Update maintainer info

Author: JoshMock

setup.py

@@ -62,10 +62,10 @@
     long_description=long_description,
     long_description_content_type="text/x-rst",
     version=package_version,
-    author="Josh Mock",
-    author_email="joshua.mock@elastic.co",
-    maintainer="Josh Mock",
-    maintainer_email="joshua.mock@elastic.co",
+    author="Elastic Clients Team",
+    author_email="clients-team@elastic.co",
+    maintainer="Elastic Clients Team",
+    maintainer_email="clients-team@elastic.co",
     project_urls={
         "Documentation": "https://elasticsearch-serverless-python.readthedocs.io",
         "Source Code": "https://github.com/elastic/elasticsearch-serverless-python",