Fix tool `get_sbml_model` #26

Job	Run time
Setup cache and determine changed repositories (3.7)	43s
Lint R scripts (ubuntu-20.04, release)	1m 2s
Lint tool-list (3.7)	33s
Check file sizes	4s
Lint Python scripts (3.7)	12s
Test tools (0, 3.7)	7m 35s
Combine chunked test results (3.7)	40s
Check workflow success	1s
Deploy	0s
Report deploy status	0s
	10m 50s

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