Add type hints to the characterize_file script #1784

Job	Run time
Lint	1m 12s
Test mcp-server on 3.8	5m 41s
Test frontend	39s
Test mcp-server on 3.9	5m 57s
Test mcp-server on 3.10	6m 6s
Test mcp-server on 3.11	6m 8s
Test mcp-server on 3.12	7m 26s
Test mcp-client on 3.8	6m 7s
Test mcp-client on 3.9	6m 10s
Test mcp-client on 3.10	7m 5s
Test mcp-client on 3.11	6m 20s
Test mcp-client on 3.12	15m 53s
Test dashboard on 3.8	7m 26s
Test dashboard on 3.9	6m 51s
Test dashboard on 3.10	6m 40s
Test dashboard on 3.11	6m 55s
Test dashboard on 3.12	7m 41s
Test archivematica-common on 3.8	6m 25s
Test archivematica-common on 3.9	6m 36s
Test archivematica-common on 3.10	5m 44s
Test archivematica-common on 3.11	6m 56s
Test archivematica-common on 3.12	6m 33s
Test storage-service on 3.9	6m 2s
Test migrations on 3.9	5m 37s
	2h 34m 10s

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