sysutils/cni-epair: Update to 1.2.0

Containers can now join a VLAN of a bridge with vlanfilter, set per
network in the epair plugin block (vlan, taggedVlans).

Changes: https://github.com/daemonless/cni-epair/releases/tag/v1.2.0
PR: 300139
Approved by: acm (mentor)