chore: Simplify naming for fixtures mini.emacs packages #10

Job	Run time
test (ubuntu-latest, 26.3, false)	31s
test (ubuntu-latest, 27.2, false)	35s
test (ubuntu-latest, 28.2, false)	34s
test (ubuntu-latest, 29.4, false)	42s
test (macos-latest, 28.2, false)	1m 28s
test (macos-latest, 29.4, false)	1m 34s
test (windows-latest, 26.3, false)	2m 48s
test (windows-latest, 27.2, false)	1m 28s
test (windows-latest, 28.2, false)	1m 13s
test (windows-latest, 29.4, false)	1m 22s
test (ubuntu-latest, snapshot, true)	31s
test (macos-latest, snapshot, true)	1m 21s
test (windows-latest, snapshot, true)	2m 27s
	16m 34s

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