processFile silently fails if there is any error

[RaphaelIT7]

So I noticed that I had a few broken tests when I went thru the logs and I never noticed it before.
This should probably let the workflow fail or throw a warning to make it more apparent that there's an error.
Yes the workflow is from gmod_tests but the error itself is in GLuaTest.

Example(Look at the Run GLuaTest step): https://github.com/CFC-Servers/gmod_tests/actions/runs/9877474323/job/27279166133

L 07/10/2024 - 15:55:35: Lua Error: 
[project] addons/project/lua/tests/gmod/classes/convar/isflagset.lua:57: '<name>' expected near '='
  1. processFile - addons/gluatest/lua/gluatest/loader.lua:24
   2. getTestsInDir - addons/gluatest/lua/gluatest/loader.lua:48
    3. getTestsInDir - addons/gluatest/lua/gluatest/loader.lua:53
     4. loader - addons/gluatest/lua/gluatest/loader.lua:53
      5. loadAllProjectsFrom - addons/gluatest/lua/gluatest/init.lua:43
       6. runAllTests - addons/gluatest/lua/gluatest/init.lua:59
        7. v - addons/gluatest/lua/gluatest/init.lua:69
         8. unknown - lua/includes/modules/hook.lua:[96](https://github.com/CFC-Servers/gmod_tests/actions/runs/9877474323/job/27279166133#step:7:97)