CODEOWNERS: Define ownership for pkg/status

That package currently falls back to the TopHat as a codeowner but the
sig-agent team is probably better suited.

Signed-off-by: Paul Chaignon <paul@cilium.io>

CODEOWNERS

@@ -463,6 +463,7 @@ jenkinsfiles @cilium/ci-structure
 /pkg/serializer @cilium/sig-agent
 /pkg/service @cilium/sig-lb
 /pkg/sockops/ @cilium/sig-datapath @cilium/loader
+/pkg/status/ @cilium/sig-agent
 /pkg/sysctl @cilium/sig-datapath
 /pkg/testutils/ @cilium/ci-structure
 /pkg/tuple @cilium/sig-datapath