Dart

Bump dart-lang/setup-dart from 1.6.4 to 1.6.5 in the github-actions group #405

Job	Run time
test_inferred_channels (2.12.0-29.10.beta)	13s
test (ubuntu-latest, 2.14.4)	28s
test (ubuntu-latest, stable)	25s
test_latest_patch_release (2.19)	15s
test_arch	17s
test (ubuntu-latest, beta)	22s
test_latest_patch_release (3)	10s
test_raw (ubuntu-latest, dev, raw)	14s
test (ubuntu-latest, dev)	22s
test_raw (ubuntu-latest, main, raw)	15s
test (macos-latest, 2.14.4)	21s
test_latest_patch_release (3.1)	14s
test_raw (macos-latest, dev, raw)	18s
test (macos-latest, stable)	23s
test_raw (macos-latest, main, raw)	16s
test (macos-latest, beta)	21s
test_raw (windows-latest, dev, raw)	31s
test (macos-latest, dev)	28s
test_raw (windows-latest, main, raw)	21s
test (windows-latest, 2.14.4)	41s
test (windows-latest, stable)	48s
test (windows-latest, beta)	37s
test (windows-latest, dev)	44s
	9m 4s

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