message: [github-actions] enable nat64 CI tests
  This commit re-enables the nat64 CI tests, which were updated to run
  as an independent job recently.
diff: @@ -83,6 +83,12 @@ jobs:
  otbr_mdns: "mDNSResponder"
  cert_scripts: ./tests/scripts/thread-cert/border_router/MATN/*.py
  packet_verification: 1
  + - name: "Border Router NAT64 (mDNSResponder)"
  + otbr_options: "-DOT_TREL=OFF -DOT_MLR=ON -DOTBR_COVERAGE=ON -DOT_SRP_SERVER=ON -DOT_ECDSA=ON -DOT_SERVICE=ON -DOTBR_DUA_ROUTING=ON -DOT_DUA=ON -DOTBR_BORDER_ROUTING_NAT64=ON"
  + border_routing: 1
  + otbr_mdns: "mDNSResponder"
  + cert_scripts: ./tests/scripts/thread-cert/border_router/nat64/*.py
  + packet_verification: 1
  - name: "Backbone Router"
  otbr_options: "-DOT_TREL=OFF -DOT_DUA=ON -DOT_MLR=ON -DOTBR_COVERAGE=ON -DOT_SRP_SERVER=ON -DOT_ECDSA=ON -DOT_SERVICE=ON -DOTBR_DUA_ROUTING=ON"
  border_routing: 0
  