Update bindgen to the latest (0.65.1)

userfaultfd-sys fails to build <linux/userfaultfd.h> header file with
newer clang. Newer bindgen have fix for it
rust-lang/rust-bindgen#2319

Author: kawasin73

userfaultfd-sys/Cargo.toml

@@ -13,7 +13,7 @@ build = "build.rs"
 cfg-if = "^1.0.0"
 
 [build-dependencies]
-bindgen = { version = "^0.60.1", default-features = false, features = ["runtime"]  }
+bindgen = { version = "^0.65.1", default-features = false, features = ["runtime"]  }
 cc = "1.0"
 
 [features]