Fix Nord Pool empty response

[gjohansson-ST]

Proposed change

Fixes Nord Pool empty responses for future dates.
https://github.com/gjohansson-ST/pynordpool/releases/tag/v0.2.4

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes Nord pool empty response | cannot initialize integration #133950
• This PR is related to issue:
• Link to documentation pull request:

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[austinmroczek]

It would be great if you could add a test for the new exception handling you added.

[austinmroczek]

Looks good