Change the default endpoints to the correct port

[MKaptein]

Currently sclblpy tries to submit to:

USER_MANAGER_URL: str = "https://admin.sclbl.net"  # Location of the user manager.
TOOLCHAIN_URL: str = "https://toolchain.sclbl.net"  # Location of the toolchain server.

But this should be:

USER_MANAGER_URL: str = "https://usermanager.sclbl.net:8008"  # Location of the user manager.
TOOLCHAIN_URL: str = "https://toolchain.sclbl.net:8010"  # Location of the toolchain server.