Update onnx_mini_lm_l6_v2.py

fix for chroma-core#2910

specify timeout, as start of download might take some time because of corporate proxies, firewalls, content scanning etc.

chromadb/utils/embedding_functions/onnx_mini_lm_l6_v2.py

@@ -97,7 +97,7 @@ def _download(self, url: str, fname: str, chunk_size: int = 1024) -> None:
         which makes mypy unhappy. If some smart folk knows how to fix this in an
         elegant way, please do so.
         """
-        with httpx.stream("GET", url) as resp:
+        with httpx.stream("GET", url, timeout=None) as resp:
             total = int(resp.headers.get("content-length", 0))
             with open(fname, "wb") as file, self.tqdm(
                 desc=str(fname),