binwalk: update to version 2.3.3

ChangeLog (from https://github.com/ReFirmLabs/binwalk/releases):

Binwalk 2.3.3
    Added checks to prevent directory traversal vulnerability when
    external extractors create symlinks on the filesystem.
    Added --run-as command line option to allow users to control the
    privilege level external extractors are given as well as the power
    to run as root if they so choose.
    Added documentation to the README that describes the changes
    above.
Binwalk 2.3.2
    Minor bug fixes
Release 2.3.1
    Fixed issue where deps.sh could fail to install a dependency but
    the script would still succeed. Specifically sasquatch was not
    getting properly installed into the docker container.
Release v2.3.0
    This is the first release with exclusive support for Python3.
Python 2.2.1
    This will be the last release that officially supports Python 2.
Binwalk v2.2.0 Release
    Updated version to 2.2.0

(nikita)