Change classifier in setup.py

Author: ninghu

sdk/ml/azure-ai-ml/setup.py

@@ -42,7 +42,7 @@
     url="https://github.com/Azure/azure-sdk-for-python",
     keywords="azure, azure sdk",
     classifiers=[
-        "Development Status :: 5 - Production/Stable",
+        "Development Status :: 4 - Beta",
         "Programming Language :: Python",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3 :: Only",