fix: sonar issues and margins #1439

Job	Run time
Builds (backend)	1m 18s
Check Quota	15s
Builds (database-migrations)	34s
Builds (frontend)	1m 15s
Builds (doc-gen-service)	1m 42s
Builds (backend-external)	1m 14s
Builds (maintenance)	32s
Deploys / Helm	1m 42s
Integration / Backend-external	18s
E2E / Tests (chromium)	4m 29s
E2E / Tests (Google Chrome)	3m 58s
E2E / Tests (firefox)	3m 54s
E2E / Tests (safari)	2m 49s
E2E / Tests (Microsoft Edge)	3m 6s
	27m 6s

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