source.list needs to be updated

[darivianos]

It appears that openSuSe has a new release. Hence, the sources.list needs to be updated as follows:

http://download.opensuse.org/repositories/windows:/mingw:/win32/openSUSE_Leap_42.3
http://download.opensuse.org/repositories/windows:/mingw:/win64/openSUSE_Leap_42.3

This fixes the bug of WinRPM.update() not downloading the packages

[smogendrr]

Need to renew links in sources.list:
https://cache.julialang.org/http://download.opensuse.org/repositories/windows:/mingw:/win32/openSUSE_Leap_15.1
https://cache.julialang.org/http://download.opensuse.org/repositories/windows:/mingw:/win64/openSUSE_Leap_15.2