Remove django warnings in development environment #1170

Job	Run time
Test mcp-server on 3.8	5m 32s
Test mcp-server on 3.9	5m 10s
Test mcp-server on 3.10	6m 52s
Test mcp-client on 3.8	8m 15s
Test mcp-client on 3.9	8m 55s
Test mcp-client on 3.10	6m 15s
Test dashboard on 3.8	7m 36s
Test dashboard on 3.9	6m 4s
Test dashboard on 3.10	5m 49s
Test archivematica-common on 3.8	4m 59s
Test archivematica-common on 3.9	5m 19s
Test archivematica-common on 3.10	5m 21s
Test storage-service on 3.9	5m 17s
Test migrations on 3.9	4m 54s
Test frontend	51s
Lint	1m 26s
	1h 28m 35s

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