Another alternative is to just use a generic anonymous "thank you to
all the members who donated, we had great support with
whatever-number
members donating for our hosting fees drive" or something along
those lines and that frees you from listing any names.
If the donation turnout wasn't as good as you hope for, and you aim
was to list the names to hopefully "prod" the ones who haven't
donated yet, again a generic message like above can instead work
with no names, but with something like "only x out of y members have
donated, help!" or whatever.
Cheers,
Christos