chore: replace md5 with sha256 for CUDA

[Minh141120]

This pull request makes a minor update to the flatpak/ai.jan.Jan.yml file, specifically changing the hash used to verify the CUDA toolkit installer from MD5 to the more secure SHA-256 algorithm. This improves the security and integrity of the installer verification process.

• Security improvement:
  • Updated the hash verification for the CUDA toolkit installer from md5 to sha256 in flatpak/ai.jan.Jan.yml.

---

Important

Update hash verification for CUDA toolkit installer from MD5 to SHA-256 in flatpak/ai.jan.Jan.yml.

• Security Improvement:
  • Updated hash verification for CUDA toolkit installer from md5 to sha256 in flatpak/ai.jan.Jan.yml.

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[ellipsis-dev]

Important

Looks good to me! 👍

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1. flatpak/ai.jan.Jan.yml:95

• Draft comment:
  Ensure the new SHA‑256 checksum matches the installer binary. This update looks good for security.
• Reason this comment was not posted:
  Confidence changes required: 0% <= threshold 50% None

Workflow ID: wflow_8BJCVlfneF35G1VV

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[hiento09]

LGTM