Bump bindgen and update bindings

The bindings are noe generated for tss 2.4.6 library.

Signed-off-by: Gowtham Suresh Kumar <gowtham.sureshkumar@arm.com>

Author: gowthamsk-arm

tss-esapi-sys/regenerate-bindings.sh

@@ -103,4 +103,4 @@ cross-compile-tpm2-tss arm-linux-gnueabi
 rustup target add armv7-unknown-linux-gnueabi
 cargo clean
 cargo build --features generate-bindings --target armv7-unknown-linux-gnueabi
-find ../target -name tss_esapi_bindings.rs -exec cp {} ./src/bindings/arm-unknown-linux-gnueabi.rs \;
+find ../target -name tss_esapi_bindings.rs -exec cp {} ./src/bindings/arm-unknown-linux-gnueabi.rs \;