Fix known issues v2

[LifeJiggy]

🛠️ Fix: kubernetes.get_kubeconfig & invoices.get_pdf_by_uuid Download Issues

This PR resolves two major issues in the pydo client, ensuring users can successfully download Kubernetes configuration files and PDF invoices from the DigitalOcean API.

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🐛 Issues Addressed

1. kubernetes.get_kubeconfig() — YAML Download

   • Problem: YAML responses were incorrectly parsed as JSON, causing deserialization errors.
   • Solution: Method now returns raw YAML content directly (no JSON parsing).
   • Impact: Users can reliably download Kubernetes configuration files.

2. invoices.get_pdf_by_uuid() — PDF Download

   • Problem: Binary PDF responses were incorrectly parsed as JSON.
   • Solution: Method now returns raw PDF bytes directly.
   • Impact: Users can download PDF invoices without errors.

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🔧 Technical Improvements

• Custom method overrides added to src/pydo/operations/_patch.py.
• Tests updated:
  • test_kubernetes.py: Kubeconfig test now expects raw YAML.
  • test_billing.py: PDF test now expects bytes content.
  • Removed @pytest.skip from kubeconfig test.
• All changes maintain backward compatibility for other client operations.

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✅ Testing

• All mocked tests pass.
• Methods return correct content types (YAML, PDF) as expected.

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📄 Files Changed

• src/pydo/operations/_patch.py
• tests/mocked/test_kubernetes.py
• tests/mocked/test_billing.py

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Feedback and suggestions welcome!

[LifeJiggy]

Hi! My PR #555 is blocked waiting for workflow and code review approval. Could a maintainer please approve the workflow and review the changes?

[LifeJiggy]

Hi maintainers!
Just following up on this PR. Please let me know if any changes are needed, or if you have feedback.
Thanks for your time and for maintaining pydo!