Add missing feature for regex crate

See: rust-lang/regex#982

Author: chitoyuu

bindings-generator/Cargo.toml

@@ -21,7 +21,7 @@ heck = "0.4"
 miniserde = "0.1.16"
 proc-macro2 = "1"
 quote = "1"
-regex = { version = "1.5.5", default-features = false, features = ["std"] } # for security: https://blog.rust-lang.org/2022/03/08/cve-2022-24713.html
+regex = { version = "1.5.5", default-features = false, features = ["std", "unicode-perl"] } # for security: https://blog.rust-lang.org/2022/03/08/cve-2022-24713.html
 roxmltree = "0.18"
 syn = { version = "1", features = ["full", "extra-traits", "visit"] }
 unindent = "0.2.0"