fix: ConcurrentModificationException on ReconciliatorWorkerThreadPool

Author: teoincontatto

stackgres-k8s/src/operator/src/main/java/io/stackgres/operator/conciliation/ReconciliatorWorkerThreadPool.java

@@ -213,7 +213,11 @@ void executeReconciliation(ReconciliationRunnable r) {
             LOGGER.trace("{} has been scheduled to be reconcilied",
                 r);
           }
-          toExecuteReconciliations.stream().filter(r::equals).forEach(this::execute);
+          toExecuteReconciliations.forEach(ter -> {
+            if (ter.equals(r)) {
+              this.execute(ter);
+            }
+          });
           toExecuteReconciliations.remove(r);
         }
       }