refactor: Update home to 2021 edition

Author: epage

crates/home/Cargo.toml

@@ -3,7 +3,7 @@ name = "home"
 version = "0.5.6" # also update `html_root_url` in `src/lib.rs`
 authors = ["Brian Anderson <andersrb@gmail.com>"]
 documentation = "https://docs.rs/home"
-edition = "2018"
+edition.workspace = true
 include = [
     "/src",
     "/Cargo.toml",