Add error handling for deploy scripts for the API outage

[nozomione]

Context

Error handling has to be added in order to manage the pre-build process failing while the API is down.

The deploy scripts:

• Sitemap generation
• API cache

Problem or idea

To prevent a pre-build deploy failure on FE, implement error handling in our deploy scripts.

Solution or next step

• Find the good approach to tackle this problem and refactor the deploy scripts.