Update `credentials.json` with current `N8N_ENCRYPTION_KEY` for GitHub Actions tests

[grasped-dev]

I’m experiencing Credentials could not be decrypted errors in GitHub Actions for the Run test workflows job. The N8N_ENCRYPTION_KEY on my Render instance and GitHub matches (it’s 32 chars starting with b96—let me know if you need the exact value privately). However, the credentials in credentials.json seem encrypted with a different key. Could you please re-encrypt credentials.json with this key and update the file? This would fix the tests for self-hosted n8n users on Render.

Additional Info:

• Render n8n instance: https://n8n-self-hosted-edumated.onrender.com/
• GitHub Actions workflow: run-test-workflows.yml

Thanks for your help!