TimeOutError for multiple sketch maps of urban area

When digitizing multiple (here 4) sketch maps of an urban error, this error occurs:
```
sketch-map-tool-celery-1 | 2024-03-25 12:40:20,361 - ERROR - request.py - on_failure - Task handler raised error: TimeLimitExceeded(900)
sketch-map-tool-celery-1 | Traceback (most recent call last):
sketch-map-tool-celery-1 | File "/home/smt/.conda/envs/smt/lib/python3.11/site-packages/billiard/pool.py", line 683, in on_hard_timeout
sketch-map-tool-celery-1 | raise TimeLimitExceeded(job._timeout)
sketch-map-tool-celery-1 | billiard.einfo.ExceptionWithTraceback:
sketch-map-tool-celery-1 | """
sketch-map-tool-celery-1 | Traceback (most recent call last):
sketch-map-tool-celery-1 | File "/home/smt/.conda/envs/smt/lib/python3.11/site-packages/billiard/pool.py", line 683, in on_hard_timeout
sketch-map-tool-celery-1 | raise TimeLimitExceeded(job._timeout)
sketch-map-tool-celery-1 | billiard.exceptions.TimeLimitExceeded: TimeLimitExceeded(900,)
sketch-map-tool-celery-1 | """
sketch-map-tool-celery-1 | 2024-03-25 12:40:20,362 - ERROR - request.py - on_timeout - Hard time limit (900s) exceeded for sketch_map_tool.tasks.georeference_sketch_maps[52c7f63b-2814-4618-b7af-0b1b774897c5]
sketch-map-tool-celery-1 | 2024-03-25 12:40:20,672 - ERROR - request.py - on_failure - Task handler raised error: TimeLimitExceeded(900)
sketch-map-tool-celery-1 | Traceback (most recent call last):
sketch-map-tool-celery-1 | File "/home/smt/.conda/envs/smt/lib/python3.11/site-packages/billiard/pool.py", line 683, in on_hard_timeout
sketch-map-tool-celery-1 | raise TimeLimitExceeded(job._timeout)
sketch-map-tool-celery-1 | billiard.einfo.ExceptionWithTraceback:
sketch-map-tool-celery-1 | """
sketch-map-tool-celery-1 | Traceback (most recent call last):
sketch-map-tool-celery-1 | File "/home/smt/.conda/envs/smt/lib/python3.11/site-packages/billiard/pool.py", line 683, in on_hard_timeout
sketch-map-tool-celery-1 | raise TimeLimitExceeded(job._timeout)
sketch-map-tool-celery-1 | billiard.exceptions.TimeLimitExceeded: TimeLimitExceeded(900,)
sketch-map-tool-celery-1 | """
sketch-map-tool-celery-1 | 2024-03-25 12:40:20,672 - ERROR - request.py - on_timeout - Hard time limit (900s) exceeded for sketch_map_tool.tasks.digitize_sketches[72263cf6-27ce-4f4a-80e8-255472114184]
sketch-map-tool-celery-1 | Process 'ForkPoolWorker-2' pid:28 exited with 'signal 9 (SIGKILL)'
sketch-map-tool-celery-1 | Process 'ForkPoolWorker-4' pid:30 exited with 'signal 9 (SIGKILL)'
```

Map Frame:

Sketch Map: