Remove warnings from MacOS compiling environment in GHA

[ArielMAJ]

warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
src/core.c:192:11: warning: unused variable 'tmp' [-Wunused-variable]
    { int tmp = fread(&current_character, sizeof(char), 1, file); }
          ^
src/core.c:202:11: warning: unused variable 'tmp' [-Wunused-variable]
      int tmp =
          ^
src/core.c:282:9: warning: unused variable 'tmp' [-Wunused-variable]
  { int tmp = fread(contents, sizeof(char), contents_length, file); }
        ^
4 warnings generated.
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
1 warning generated.