Update requirements.txt

requirements.txt

@@ -1,6 +1,6 @@
-fastapi>=0.111
-uvicorn>=0.30
-httpx>=0.27
-pydantic>=2.7
-gradio>=4.43
-numpy>=2.0
+fastapi==0.111.0
+uvicorn[standard]==0.30.1
+httpx==0.27.0
+pydantic==2.7.1
+gradio==4.43.0
+numpy==2.0.0