* Use c_encoding function
The MSVC compiler does not accept direct conversion from weekday datatype (used in the date.h dependency) to unsigned int used in the DayOfWeek Enum. However, the c_encoding function gives the necessary datatype conversion.
* Updated submodule libcron/externals/date
Co-authored-by: Heinz-Peter Liechtenecker <h.liechtenecker@fh-kaernten.at>
