Run `flatpak-daily` as root with the correct home directory.

Otherwise the files (as root) are written to my home directory and when
I correct the ownership I get this error: "Refusing to operate on a user
installation as root".

Documents/bin/flatpak-daily

 #!/bin/sh
-exec sudo /bin/sh -c 'flatpak update --assumeyes && flatpak uninstall --unused --assumeyes'
+exec sudo --set-home /bin/sh -c 'flatpak update --assumeyes && flatpak uninstall --unused --assumeyes'