Don't retry on 401 in PromptNode

[FHardow]

Describe the bug
When running a pipeline with a PromptNode, we retry HTTP requests that return a 401 error code. We should not retry these, but instead fail early.

Error message
No error thrown, that is the message on which it is retried

WARNING:haystack.utils.reflection:OpenAIError - OpenAI returned an error.                                                                                  │
│ Status code: 401                                                                                                                                           │
│ Response body: {                                                                                                                                           │
│     "error": {                                                                                                                                             │
│         "message": "Incorrect API key provided: **************************************. You can find your API key at https://platform.openai. │
│         "type": "invalid_request_error",                                                                                                                   │
│         "param": null,                                                                                                                                     │
│         "code": "invalid_api_key"                                                                                                                          │
│     }                                                                                                                                                      │
│ }               

Expected behavior
Don't retry a 401 and raise an exception.

Additional context
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To Reproduce
Create a pipeline with an openai PromptNode, let the pipeline run and delete the key in the background.

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