[Bugfix] Fix flaky test_streaming_response test (vllm-project#20363)

Signed-off-by: NickLucche <nlucches@redhat.com>

Author: NickLucche

requirements/common.txt

@@ -13,7 +13,7 @@ tokenizers >= 0.21.1  # Required for fast incremental detokenization.
 protobuf # Required by LlamaTokenizer.
 fastapi[standard] >= 0.115.0 # Required by FastAPI's form models in the OpenAI API server's audio transcriptions endpoint.
 aiohttp
-openai >= 1.52.0 # Ensure modern openai package (ensure types module present and max_completion_tokens field support)
+openai >= 1.52.0, <= 1.90.0 # Ensure modern openai package (ensure types module present and max_completion_tokens field support)
 pydantic >= 2.10
 prometheus_client >= 0.18.0
 pillow  # Required for image processing