python3-bcrypt: convert to use cargo-update-recipe-crates class.

The component has been reimplemented in rust, and comes
with a large list of dependencies in Cargo.toml/Cargo.lock.

Rather than list them by hand, use a file generated with
cargo-update-recipe-crates class.

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>