fix dependencies so older versions of Rust work

Cargo.toml

@@ -6,5 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-clap = { version = "4.0", features = ["derive"] }
-regex = "1"
\ No newline at end of file
+clap = { version = "4.0.20", features = ["derive"] }
+clap_derive = "=4.0.20"
+clap_lex = "=0.3.0"
+regex = "1"