Update command overrides for 6.0 nightly to be 6.1 #166

Job	Run time
Soundness / Check generated code	1m 12s
Soundness / Swift license headers check	6s
Benchmarks / Construct Benchmarks matrix	2s
Cxx interop / Construct Cxx interop matrix	2s
Unit tests / Construct unit test matrix	2s
Examples / Linux (5.9)	23s
Examples / Linux (5.10)	24s
Examples / Linux (6.0)	34s
Examples / Windows (6.0)	2s
Examples / Linux (nightly-6.0)	33s
Soundness / API breakage check	1m 11s
Examples / Windows (nightly-6.0)	2s
Examples / Linux (nightly-main)	38s
Examples / Windows (nightly-main)	2s
Soundness / Broken symlinks check	3s
Soundness / Format check	31s
Soundness / Documentation check	1m 17s
Soundness / License headers check	3s
Soundness / Python lint check	6s
Soundness / Shell check	31s
Soundness / Unacceptable language check	2s
Soundness / YAML lint check	5s
Benchmarks / Benchmarks / Linux (6.0)	2m 40s
Benchmarks / Benchmarks / Linux (nightly-6.1)	2m 52s
Benchmarks / Benchmarks / Linux (nightly-main)	2m 52s
Cxx interop / Cxx interop / Linux (6.0)	1m 3s
Unit tests / Unit tests / Linux (6.0)	1m 25s
Cxx interop / Cxx interop / Linux (nightly-6.1)	1m 6s
Unit tests / Unit tests / Linux (nightly-6.1)	1m 39s
Cxx interop / Cxx interop / Linux (nightly-main)	1m 4s
Unit tests / Unit tests / Linux (nightly-main)	1m 36s
	24m 8s

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