[I] [Bug]: plc4j-driver-opcua seems to leak memory

[via GitHub]

takraj opened a new issue, #1101:
URL: https://github.com/apache/plc4x/issues/1101

   ### What happened?
   
   The OPC-UA driver seem to leak memory when closing a connection object. This 
issue sooner or later lead to application crash with OOM error. Workaround 
would be to reuse connection objects, but then we face the issue #1100, which I 
believe renders a fix for this pretty urgent.
   
   ![Screenshot from 2023-09-23 
14-14-10](https://github.com/apache/plc4x/assets/2440418/17d5329b-e1ed-459c-bd1f-5d3339b22982)
   
   
   Example code to reproduce the issue:
   ```
   PlcDriverManager driverManager = new PlcDriverManager();
   
   AtomicBoolean running = new AtomicBoolean(true);
   Runtime.getRuntime().addShutdownHook(new Thread(() -> running.set(true)));
   
   while (running.get()) {
       PlcConnection connection = 
driverManager.getConnection("opcua:tcp://127.0.0.1:40185/milo?discovery=false");
       try {
           Thread.sleep(100);
       } finally {
           connection.close();
       }
   }
   ```
   
   Some additional charts
   --------------------------------
   
   ![Screenshot from 2023-09-23 
14-23-14](https://github.com/apache/plc4x/assets/2440418/1384d3d8-63b8-4abb-ac75-4843d9bf72b2)
   
   ![Screenshot from 2023-09-23 
14-08-05](https://github.com/apache/plc4x/assets/2440418/0a50afb6-3d8d-436f-afcb-a3bb7253f1f1)
   
   ![Screenshot from 2023-09-23 
14-10-16](https://github.com/apache/plc4x/assets/2440418/e98e765c-79a5-40bc-b342-4c4acd9c9337)
   
   ![Screenshot from 2023-09-23 
14-10-25](https://github.com/apache/plc4x/assets/2440418/913b2138-0571-4cff-a75b-9ebedebb1f56)
   
   Logs
   --------
   
   
[logs-before-oom.txt](https://github.com/apache/plc4x/files/12706498/logs-before-oom.txt)
   
   Heap dumps
   -------------------
   
   * 
[MemoryLeakDemo_1045304_23_09_2023_12_41_27.zip](https://github.com/apache/plc4x/files/12706514/MemoryLeakDemo_1045304_23_09_2023_12_41_27.zip)
   * 
[MemoryLeakDemo_1045304_23_09_2023_13_02_21.zip](https://github.com/apache/plc4x/files/12706515/MemoryLeakDemo_1045304_23_09_2023_13_02_21.zip)
   * 
[MemoryLeakDemo_1045304_23_09_2023_14_05_15.zip](https://github.com/apache/plc4x/files/12706519/MemoryLeakDemo_1045304_23_09_2023_14_05_15.zip)
   
   
   ### Version
   
   v0.10.0
   
   ### Programming Languages
   
   - [X] plc4j
   - [ ] plc4go
   - [ ] plc4c
   - [ ] plc4net
   
   ### Protocols
   
   - [ ] AB-Ethernet
   - [ ] ADS /AMS
   - [ ] BACnet/IP
   - [ ] CANopen
   - [ ] DeltaV
   - [ ] DF1
   - [ ] EtherNet/IP
   - [ ] Firmata
   - [ ] KNXnet/IP
   - [ ] Modbus
   - [X] OPC-UA
   - [ ] S7


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