Update starlette version to 0.47.2

Fix security https://github.com/meta-llama/llama-cookbook/security/dependabot/92

end-to-end-use-cases/whatsapp_llama_4_bot/requirements.txt

@@ -36,7 +36,7 @@ requests==2.32.3
 rich==13.9.4
 shellingham==1.5.4
 sniffio==1.3.1
-starlette==0.46.2
+starlette==0.47.2
 tabulate==0.9.0
 together==1.5.5
 tqdm==4.67.1