fix: revert rust 2024 (#70)

Author: dsherret

rs-lib/Cargo.toml

@@ -2,7 +2,7 @@
 name = "dprint-swc-ext"
 version = "0.22.0"
 authors = ["David Sherret <[email protected]>"]
-edition = "2024"
+edition = "2021"
 license = "MIT"
 repository = "https://github.com/dprint/dprint-swc-ext"
 description = "Functionality to make swc easier to work with."