fix(falco/test): bump pyyaml from 5.3.1 to 5.4
fix(falco/test): bump pyyaml from 5.3.1 to 5.4

CVE-2020-14343 affects one of the dependencies the Falco (integration) test suite uses.

Signed-off-by: Leonardo Di Donato <2012e0ca99d70aa6c893822ff73002216e5dba72@gmail.com>
draios/falco,draios/falco,draios/falco,draios/falco,draios/falco,draios/falco,draios/falco,draios/falco