Fix line ending patterns in all `execute` testcases

[CohenArthur]

The correct pattern for an end of line should be \r*\n+ to ensure compatibility with all platforms

[badumbatish]

Can I just do sed -i -e 's/$/\r/' for each file in execute/ dir ?

[CohenArthur]

@badumbatish some of them are more correct than others, and some of them are also nested - but yes, this is basically it :) it's quite a simple issue, I'll mark it with good-first-pr

[badumbatish]

is there a way to test that the changes I perform on these files would work?

Edited: I ran the tests and two are failing due to \r\n, i fixed it.