fix: fix the workflow warnings on Windows

[DimitarTachev]

Always split by "\n" as the string literals are always generating "/n" line terminators based on the below-mentioned ES specification.

More details: http://exploringjs.com/es6/ch_template-literals.html#_line-terminators-in-template-literals-are-always-lf-n

8.2.3 Line terminators in template literals are always LF (\n) #
Common ways of terminating lines are:

Line feed (LF, \n, U+000A): used by Unix (incl. current macOS)
Carriage return (CR, \r, U+000D): used by the old Mac OS.
CRLF (\r\n): used by Windows.
`All of these line terminators are normalized to LF in template literals.` That is, the following code logs true on all platforms:

const str = `BEFORE
AFTER`;
console.log(str === 'BEFORE\nAFTER'); // true

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Related to: #4548