ci: change branch to main #1

Job	Run time
test (ubuntu-latest, 26.3, false)	30s
test (ubuntu-latest, 27.2, false)	31s
test (ubuntu-latest, 28.2, false)	29s
test (ubuntu-latest, 29.2, false)	32s
test (macos-latest, 26.3, false)	1m 38s
test (macos-latest, 27.2, false)	2m 0s
test (macos-latest, 28.2, false)	1m 43s
test (macos-latest, 29.2, false)	2m 19s
test (windows-latest, 26.3, false)	2m 25s
test (windows-latest, 27.2, false)	1m 5s
test (windows-latest, 28.2, false)	51s
test (windows-latest, 29.2, false)	1m 0s
test (ubuntu-latest, snapshot, true)	27s
test (macos-latest, snapshot, true)	1m 34s
test (windows-latest, snapshot, true)	40s
	17m 44s

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