Fix shared keyword for ldc 1.18

/usr/local/include/d/object.d(3219,36): Error: cannot implicitly convert expression aa of type shared(ProcessStatus[int]) to const(shared(ProcessStatus)[int])
../source/gx/tilix/terminal/monitor.d(46,46): Error: template instance object.values!(shared(ProcessStatus[int]), shared(ProcessStatus), int) error instantiating

Author: valpackett

source/gx/tilix/terminal/monitor.d

@@ -128,7 +128,7 @@ enum SLEEP_CONSTANT_MS = 300;
 /**
  * List of processes being monitored.
  */
-shared ProcessStatus[GPid] processes;
+shared(ProcessStatus)[GPid] processes;
 
 void monitorProcesses(int sleep, Tid tid) {
     bool abort = false;