Fix printing to stderr - add a missing newline #142

Job	Run time
Compatibility test	4m 59s
Swift 6 Language Mode	0s
Soundness / API breakage check	0s
Soundness / Documentation check	1m 40s
Soundness / Unacceptable language check	5s
Soundness / License headers check	6s
Soundness / Broken symlinks check	5s
Soundness / Format check	39s
Soundness / Shell check	34s
Soundness / YAML lint check	0s
Soundness / Python lint check	4s
Example packages / Linux (5.9)	16m 26s
Example packages / Linux (5.10)	15m 35s
Example packages / Linux (6.0)	17m 45s
Example packages / Linux (nightly-6.0)	22m 18s
Example packages / Linux (nightly-main)	31s
Integration test / Linux (5.9)	1m 40s
Integration test / Linux (5.10)	1m 34s
Integration test / Linux (6.0)	1m 50s
Integration test / Linux (nightly-6.0)	2m 11s
Integration test / Linux (nightly-main)	31s
Unit tests / Unit tests / Linux (5.9)	1m 40s
Unit tests / Unit tests / Linux (5.10)	1m 41s
Unit tests / Unit tests / Linux (6.0)	1m 54s
Unit tests / Unit tests / Linux (nightly-6.0)	2m 8s
Unit tests / Unit tests / Linux (nightly-main)	33s
	1h 36m 29s

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