docs: use and mention ubuntu-slim for small tasks (#729) #2100

Job	Run time
change-detection / Identify source changes	8s
rr-tests / Action	19s
rr-tests / Run pylint	14s
cookie / Distribution build	7m 16s
cookie / Check included Noxfile	3m 30s
cookie / Format	6m 30s
rr-tests / Run cog on README	13s
cookie / Check Python 3.10 on windows-latest	4m 16s
cookie / Check Python 3.14 on windows-latest	4m 19s
cookie / Check Python 3.10 on ubuntu-latest	3m 10s
cookie / Check Python pypy-3.11 on ubuntu-latest	1m 35s
cookie / Check Python 3.14 on macos-15-intel	5m 14s
cookie / Check Python 3.10 on macos-15-intel	3m 49s
rr-tests / Check Python 3.14 on ubuntu-latest	31s
rr-tests / Check Python 3.14 on macos-latest	25s
cookie / Check Python 3.10 on macos-latest	2m 6s
rr-tests / Check Python 3.12 on windows-latest	46s
rr-tests / Check Python 3.12 on macos-15-intel	46s
rr-tests / Check Python 3.12 on macos-latest	27s
cookie / Check Python 3.14 on macos-latest	1m 35s
rr-tests / Check Python 3.14 on windows-latest	47s
rr-tests / Check Python 3.14 on macos-15-intel	1m 11s
rr-tests / Check Python 3.10 on macos-latest	42s
rr-tests / Check Python 3.10 on windows-latest	46s
rr-tests / Check Python 3.10 on macos-15-intel	48s
rr-tests / Check Python 3.12 on ubuntu-latest	30s
rr-tests / Check Python 3.10 on ubuntu-latest	26s
cookie / Check Python 3.14 on ubuntu-latest	3m 34s
cookie / pass	3s
pass	4s
	56m 0s

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