NexoPOS 6.0.5

This minor update fixes issues reported by @ayoub-hs. We've also changed the way NexoPOS was tested through CI/CD. Here is a full breakdown.

Changelog:

• Fix: Unhandled accounting misconfiguration #2430
• Fix: unit test with missing module directory
• Fix: no validation error for invalid on the quick products #2429
• Fixed: Component Visual Sizes
• Updating instructions