Close connections after each task

This emulates the request_finished signal

Author: RealOrangeOne

django_tasks/backends/database/management/commands/db_worker.py

@@ -8,6 +8,7 @@
 from typing import List, Optional
 
 from django.core.management.base import BaseCommand
+from django.db import connections
 from django.db.utils import OperationalError
 
 from django_tasks import DEFAULT_TASK_BACKEND_ALIAS, tasks
@@ -97,6 +98,9 @@ def start(self) -> None:
             finally:
                 self.running_task = False
 
+                for conn in connections.all(initialized_only=True):
+                    conn.close()
+
             if self.batch and task_result is None:
                 # If we're running in "batch" mode, terminate the loop (and thus the worker)
                 return None