v0.4.0

Changelog

a492453 update(pkg/driverbuilder): use falcosecurity/libs instead of draios/sysdig
6cabb8d build: revert shell usage in Makefile
0a3b970 update(build): fetch deps from download.falco.org
2a7fcc9 update(pkg/driverbuilder): add support for Amazon Linux 2 extra kernels
7571d8c build: use current SHELL variable in Makefile