pass memory arg from atime_versions to bench::mark

[tdhock]

adding memory=FALSE to atime::atime_test args in this example Rdatatable/data.table#7272 (comment)
gives the error below:

> ares=eval(tinfo$test.call[["frollapply improved in #7272"]])
Erreur dans get_sha_vec(sha.vec, dots.vec) : 
  each ... argument value and sha.vec element must be a string (package version, length=1, not NA), problems: memory
Chronométrage arrêté à : 0.001 0 0