Investigate extra newline output in truffle develop when running truffle test

[davidmurdoch]

See here for where the new line causes issues:

truffle/packages/core/lib/console.js

Lines 351 to 357 in f83cf2d

	// convert buffer to string
	data = data.toString();
	// workaround: remove extra newline in `truffle develop` console
	// truffle test, for some reason, appends a newline to the data
	// it emits here.
	if (data.endsWith(os.EOL)) data = data.slice(0, -os.EOL.length);
	console.log(data);

cc @cds-amal