DB Manager <> db_cache fix attempt #2007

Job	Run time
black	40s
pytest - Python 3.10.x - Unit Tests	4m 43s
pytest - Python 3.10.x - Integration Tests	1m 21s
pytest - Python 3.10.x - Integration with Local Chain	4m 10s
autoflake	34s
isort	34s
pytest - Python 3.11.x - Unit Tests	6m 25s
mypy	1m 24s
pytest - Python 3.11.x - Integration Tests	1m 16s
pytest - Python 3.11.x - Integration with Local Chain	4m 3s
pytest - Python 3.12.x - Unit Tests	5m 20s
pytest - Python 3.12.x - Integration Tests	1m 19s
pytest - Python 3.12.x - Integration with Local Chain	4m 27s
	36m 16s

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