message: other: bump edition to 2021
diff: name = "bottom"
  version = "0.7.2"
  authors = ["Clement Tsang <cjhtsang@uwaterloo.ca>"]
  -edition = "2018" # TODO: Bump to 2021 at some point?
  +edition = "2021"
  repository = "https://github.com/ClementTsang/bottom"
  keywords = ["cross-platform", "monitoring", "cli", "top", "tui"]
  license = "MIT"
  