Bump actions/checkout from 4.1.4 to 4.1.6 #273

Job	Run time
analyze (dev)	16s
test_flutter (ubuntu-latest, beta)	1m 48s
test_flutter (ubuntu-latest, stable)	1m 42s
test_dart (ubuntu-latest, 3.0.0)	1m 52s
test_flutter (macos-latest, beta)	1m 40s
test_flutter (macos-latest, stable)	1m 37s
test_dart (ubuntu-latest, dev)	1m 14s
test_dart (macos-latest, 3.0.0)	1m 50s
test_flutter (windows-latest, beta)	3m 27s
test_flutter (windows-latest, stable)	3m 45s
test_dart (macos-latest, dev)	1m 1s
test_dart (windows-latest, 3.0.0)	2m 46s
test_dart (windows-latest, dev)	1m 57s
	24m 55s

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