Bump @openapitools/openapi-generator-cli from 2.20.2 to 2.21.0 #187

Job	Run time
Set CI/CD metadata	5s
Commit stage / Check file format	6s
Commit stage / Scan secrets	6s
Commit stage / Lint and validate OpenAPI	37s
Commit stage / Check Markdown format	3s
Commit stage / Check English usage	7s
Commit stage / Scan dependencies	38s
Commit stage / Count lines of code	8s
Test stage / Unit tests	6s
Test stage / Linting	4s
Test stage / Perform static analysis	4s
Test stage / Test coverage	4s
Build stage / Artefact 1	6s
Build stage / Artefact 2	5s
Acceptance stage / Environment set up	3s
Acceptance stage / Security test	5s
Acceptance stage / Contract test	4s
Acceptance stage / UI test	3s
Acceptance stage / Load test	4s
Acceptance stage / Integration test	4s
Acceptance stage / UI performance test	4s
Acceptance stage / Accessibility test	3s
Acceptance stage / Environment tear down	3s
	2m 52s

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