Fix: Make the janitor best effort #3630

Job	Run time
test-dbt-versions (1.3)	1m 39s
test-dbt-versions (1.4)	1m 35s
test-dbt-versions (1.10)	1m 45s
test-dbt-versions (1.5)	1m 30s
test-dbt-versions (1.7)	1m 45s
test-dbt-versions (1.9)	1m 49s
changes	8s
test-dbt-versions (1.8)	1m 43s
test-dbt-versions (1.6)	1m 33s
test-vscode	-1s
test-vscode-e2e	-10s
cicd-tests-windows	10m 4s
doc-tests	30s
migration-test	1m 43s
engine-tests-docker (postgres)	2m 15s
engine-tests-docker (trino)	8m 20s
engine-tests-docker (duckdb)	1m 41s
engine-tests-docker (mysql)	1m 35s
engine-tests-docker (mssql)	2m 29s
style-and-cicd-tests (3.12)	23m 35s
style-and-cicd-tests (3.11)	20m 15s
engine-tests-docker (risingwave)	2m 37s
style-and-cicd-tests (3.13)	22m 11s
engine-tests-docker (spark)	5m 9s
style-and-cicd-tests (3.10)	23m 50s
engine-tests-docker (clickhouse)	2m 32s
style-and-cicd-tests (3.9)	24m 10s
ui-test	-1s
ui-style	-1s
engine-tests-cloud	0s
	2h 46m 10s

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