# align markup to bottom of page

I have some music where I put the stanzas below:

\version "2.20.0"

#(set! paper-alist (cons '("size8" . (cons (* 8 cm) (* 8 cm))) paper-alist))

\paper {
#(set-paper-size "size8")
first-page-number = 1
print-page-number = ##t
print-first-page-number = ##t
}

\bookpart {
\score {
{ c'1 d'2 }
\layout { indent = #0 }
}
\markup {
\column {
\line { some stanza text }
\line { that should be }
\line { aligned to the }
\line { bottom of the page }
}
}
}


That markup is put right below the music by default:

But I want it to be aligned to the bottom of the page (above the footer), like this:

Is that possible, and if yes, how?

I know I can add \vspace to move it further below, but I want it ALIGNED to the bottom, so that it works for all markups and not just for specific ones where I fiddled around and found good numbers for \vspace.