chore: update dependencies for prebuilt bentos

Signed-off-by: Aaron Pham <[email protected]>

Author: aarnphm

src/templates/requirements.txt.j2

@@ -1,8 +1,8 @@
-bentoml==1.4.12
-vllm==0.8.5
-fastapi==0.115.4
-pydantic==2.11.1
-openai==1.69.0
+bentoml==1.4.15
+vllm==0.9.0
+fastapi
+pydantic
+openai
 {% for req in requirements %}
 {{ req }}
 {% endfor %}