capstone-sys: update bindgen (0.49.0 -> 0.52.0)

Author: losynix

capstone-sys/Cargo.toml

@@ -25,7 +25,7 @@ travis-ci = { repository = "capstone-rust/capstone-sys" }
 libc = { version = "0.2.59", default-features = false }
 
 [build-dependencies]
-bindgen = { optional = true, version = "0.49.0" }
+bindgen = { optional = true, version = "0.52.0" }
 cc = "1.0"
 
 [features]