ELI-338: Adds poetry install explicitly #3

Job	Run time
Set CI/CD metadata	6s
Commit stage / Check Markdown format	3s
Commit stage / Lint and validate OpenAPI	36s
Commit stage / Scan dependencies	39s
Commit stage / Check English usage	6s
Commit stage / Scan secrets	7s
Commit stage / Check file format	5s
Commit stage / Count lines of code	9s
Commit stage / Lint and validate OpenAPI	37s
Set CI/CD metadata	6s
Commit stage / Check Markdown format	3s
Commit stage / Count lines of code	9s
Commit stage / Scan secrets	7s
Commit stage / Check English usage	6s
Commit stage / Scan dependencies	39s
Commit stage / Check file format	5s
	3m 43s

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