Update .gitignore #13

Job	Run time
test (ubuntu-latest, 26.3, false)	32s
test (ubuntu-latest, 27.2, false)	33s
test (ubuntu-latest, 28.2, false)	34s
test (ubuntu-latest, 29.4, false)	1m 6s
test (macos-latest, 28.2, false)	1m 39s
test (macos-latest, 29.4, false)	1m 37s
test (windows-latest, 26.3, false)	2m 54s
test (windows-latest, 27.2, false)	2m 47s
test (windows-latest, 28.2, false)	2m 43s
test (windows-latest, 29.4, false)	1m 20s
test (ubuntu-latest, snapshot, true)	29s
test (macos-latest, snapshot, true)	1m 17s
test (windows-latest, snapshot, true)	1m 48s
	19m 19s

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