Use jupyter-fs<0.4.0 in tests #23

Job	Run time
pre-commit / pre-commit	47s
pre-commit / lint-extension	2m 34s
codeql / codeql	4m 21s
test-conda / test-conda (ubuntu-latest, 3.9)	10m 32s
test-pip / test-pip (3.8, ~=2.0, true)	7m 54s
test-conda / test-conda (macos-latest, 3.9)	15m 40s
test-pip / test-pip (3.9, ~=2.0, true)	10m 1s
test-conda / test-conda (windows-latest, 3.9)	13m 18s
test-pip / test-pip (3.10, ~=2.0, true)	13m 3s
test-pip / test-pip (3.11, ~=2.0, true)	11m 17s
test-pip / test-pip (3.12-dev, true)	10m 41s
test-pip / test-pip (3.13-dev, true)	2m 56s
test-pip / test-pip (3.x)	10m 20s
test-pip / test-pip (3.x, ~=3.0)	11m 48s
test-pip / test-pip (3.11, ~=4.0, true)	1m 35s
test-pip / test-pip (3.x, false)	11m 17s
test-pip / test-pip (3.x, true, true)	14m 21s
build / build	3m 30s
pass	4s
	2h 35m 59s

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