deps: pin Revise to upstream master (#63665)
The `test revise` job runs Revise from the `kf/define_method` branch of a
fork, which upstream master now contains. Pin upstream master instead
(timholy/Revise.jl@9eaa442e, which also includes timholy/Revise.jl#1148);
no Revise release contains the `kf/define_method` changes yet.
Assisted-by: Claude Code (Opus 5.5)
