docs(changelog.md): update for release 0.30.0
docs(changelog.md): update for release 0.30.0

Signed-off-by: Frederico Araujo <7973ea5c0f91d1eb0bb4e8c6da9a8f1c83838fcd@ibm.com>

draios/falco,draios/falco,draios/falco,draios/falco,draios/falco,draios/falco,draios/falco,draios/falco