fix: improve assets discovery worker stability. #2113

Job	Run time
Build ILC (src, refs/pull/597/merge)	1m 31s
Run E2E tests (mysql, mysql, 3306)	8m 44s
Build ILC (dest, master)	1m 33s
Build Registry (src, refs/pull/597/merge)	26s
Build Registry (dest, master)	23s
Run E2E tests (pg, postgres, 5432)	8m 36s
Test Registry (src, refs/pull/597/merge, sqlite3)	1m 45s
Test Registry (src, refs/pull/597/merge, mysql, mysql, 3306)	1m 30s
Test Registry (src, refs/pull/597/merge, pg, postgres, 5432)	1m 35s
Test Registry (dest, master, sqlite3)	1m 50s
Test Registry (dest, master, mysql, mysql, 3306)	1m 43s
Test Registry (dest, master, pg, postgres, 5432)	1m 45s
PR Coverage Report	2m 20s
Push images to registry	5s
Build documentation	0s
	33m 46s

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