Fix/typo ISO8601 #1279

Job	Run time
Lint	1m 8s
Test frontend	36s
Test mcp-server on 3.8	3m 18s
Test mcp-server on 3.9	3m 6s
Test mcp-server on 3.10	3m 15s
Test mcp-client on 3.8	3m 54s
Test mcp-client on 3.9	3m 31s
Test mcp-client on 3.10	3m 44s
Test dashboard on 3.8	4m 13s
Test dashboard on 3.9	3m 46s
Test dashboard on 3.10	3m 34s
Test archivematica-common on 3.8	3m 16s
Test archivematica-common on 3.9	3m 4s
Test archivematica-common on 3.10	3m 8s
Test storage-service on 3.9	2m 55s
Test migrations on 3.9	3m 27s
	49m 55s

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