Update validation.js

[Jaime-Trinidad]

Summary

There are more users having the EAGAIN error when they run make validate. There was a fix already made using async functions,I have been working in this possible solution, it slows the validation process. Take a look to it

Changes

• Exec function usage: Switched from exec to spawn for better control.
• Asynchronous handling: Improved asynchronous operations using async and await.
• Error handling: Enhanced error management in child processes.
• Multiple child processes: Introduced delay between child process creations.
• Logging: Replaced console.debug with console.log for better logging.
• Promise handling: Improved promise management with await.
• Execution delay: Introduced an index based delay replacing setTimeout.
• Error exit: Removed process.exit(1) and incorporated error handling.

Functions modified:

• validatePayloadCodecs: Redesigned for better async handling, control, error management, and prevention of EAGAIN errors.
• requireImageDecode: Swapped exec with spawn for improved control and error handling. Errors are now propagated via promises.
• vendors.vendors.forEach: Refined loop with async/await for improved promise handling and graceful error management.

Notes for Reviewers

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Release Notes

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[KrishnaIyer]

@Jaime-Trinidad: Can you fix the comments?

[johanstokking]

Replaced by #726