[ROCm][CI] Stabilize ROCm speech-to-text translation test with lower min acc threshold (#37723)

Signed-off-by: Andreas Karatzas <akaratza@amd.com>

tests/entrypoints/openai/speech_to_text/test_translation_validation.py

@@ -182,7 +182,7 @@ async def test_streaming_response(foscolo, client_and_model, server):
     # being very close semantically.
     assert (
         sum([x == y for x, y in zip(res_stream, res_no_stream.text.split())])
-        >= len(res_stream) * 0.9
+        >= len(res_stream) * 0.87
     )