Add aiohttp dependency to requirements.txt

Author: Akhileswara-Microsoft

.github/requirements.txt

@@ -18,6 +18,7 @@ azure-ai-projects==2.1.0
 openai==2.34.0
 azure-ai-inference==1.0.0b9
 azure-search-documents==11.7.0b2
+aiohttp==3.14.3
 
 # Testing tools
 pytest==8.4.1  # Compatible version for pytest-asyncio