message: ci: dedupe and sort interop pairs
diff: @@ -68,7 +68,7 @@ jobs:
  | jq -c '[. | to_entries[] | select(.value.role == "both" or .value.role == "server") | {"client": "s2n-quic", "server": .key}] | sort'
  )
  echo "Servers: $SERVERS"
  - MATRIX=$(echo "[$CLIENTS, $SERVERS]" | jq -c '{"include": . | flatten}')
  + MATRIX=$(echo "[$CLIENTS, $SERVERS]" | jq -c '{"include": . | flatten | sort | unique}')
  echo "Matrix: $MATRIX"
  echo "::set-output name=matrix::$MATRIX"
  