Handle the exception in case of large yml

What does this MR do and why?

As a part of !90713 (merged) we have added pipeline info to DAST config.

We are passing the yml dump to Lint class but the Lint class is not checking the size of merged_yml and this raising the error DataTooLargeError error whenever the merged yml is large.

This MR is gracefully handling that error.

Screenshots or screen recordings

Please check the screen recording and steps to test in this MR !90713 (merged)

MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.

Related to #369384 (closed)