Fix tests

[brylie]

https://github.com/brylie/langflow-fastapi-htmx/actions/runs/9816385906/job/27106524769#step:6:1

==================================== ERRORS ====================================
________________ ERROR collecting tests/test_chat_gpt_client.py ________________
tests/test_chat_gpt_client.py:3: in
from app.chat_gpt_client import get_chat_response_with_history, Message, MessageRole
app/chat_gpt_client.py:29: in
client = AsyncOpenAI(api_key=os.getenv("OPENAI_API_KEY"))
/opt/hostedtoolcache/Python/3.10.14/x64/lib/python3.10/site-packages/openai/_client.py:316: in init
raise OpenAIError(
E openai.OpenAIError: The api_key client option must be set either by passing api_key to the client or by setting the OPENAI_API_KEY environment variable
_____________________ ERROR collecting tests/test_main.py ______________________
tests/test_main.py:3: in
from app.main import app
app/main.py:11: in
from app.chat_gpt_client import get_chat_response_with_history, Message, MessageRole
app/chat_gpt_client.py:29: in
client = AsyncOpenAI(api_key=os.getenv("OPENAI_API_KEY"))
/opt/hostedtoolcache/Python/3.10.14/x64/lib/python3.10/site-packages/openai/_client.py:316: in init
raise OpenAIError(
E openai.OpenAIError: The api_key client option must be set either by passing api_key to the client or by setting the OPENAI_API_KEY environment variable
=========================== short test summary info ============================
ERROR tests/test_chat_gpt_client.py - openai.OpenAIError: The api_key client option must be set either by passing api_key to the client or by setting the OPENAI_API_KEY environment variable
ERROR tests/test_main.py - openai.OpenAIError: The api_key client option must be set either by passing api_key to the client or by setting the OPENAI_API_KEY environment variable
!!!!!!!!!!!!!!!!!!! Interrupted: 2 errors during collection !!!!!!!!!!!!!!!!!!!!
============================== 2 errors in 1.05s ===============================
Error: Process completed with exit code 2.