Pin starlette<1.0 + fastapi<0.116 for gradio 4.44.1 TemplateResponse compat

Starlette 1.0 removed the old TemplateResponse(name, context) positional
API that gradio 4.44.1 still uses, causing 'unhashable type: dict' in
Jinja2 cache (a Request object reaches the cache key). Pinning to <1.0
keeps the legacy signature alive. fastapi<0.116 keeps a starlette<1.0
in its dependency range.

requirements.txt

@@ -1,6 +1,8 @@
 torch==2.4.0
 torchaudio==2.4.0
 pydantic==2.10.6
+starlette<1.0
+fastapi<0.116
 safetensors>=0.4.0
 accelerate>=0.25.0
 peft>=0.7.0