message: api: reserve HCM field for pending security fix.
diff: @@ -24,7 +24,7 @@ import "gogoproto/gogo.proto";
  // [#protodoc-title: HTTP connection manager]
  // HTTP connection manager :ref:`configuration overview <config_http_conn_man>`.
  -// [#comment:next free field: 30]
  +// [#comment:next free field: 31]
  message HttpConnectionManager {
  enum CodecType {
  option (gogoproto.goproto_enum_prefix) = false;
  @@ -378,6 +378,9 @@ message HttpConnectionManager {
  repeated UpgradeConfig upgrade_configs = 23;
  reserved 27;
  +
  + // This is reserved for a pending security fix.
  + reserved 30;
  }
  message Rds {
  