fix tests on windows

- skipping file size test on windows
- update EOL in ModelTaskTest.php

I took the laziest way by skipping the entire test. I could remove only some parts or make tests passing even on windows (by duplicating sometime) if you feel it's important. IMO it's not necessary, it was just annoying to get 11 tests failing all the time in local.
I had the same issues locally. I simply ignored those ;) But on WIN machines it is indeed one byte more. What I was thinking back then was, that we should make `.gitattributes` file to default to UNIX lfs for all non .bat files by default. This might help, as this might most likely play into this for quite a few failing tests.