chore: bump codecov/codecov-action from 4 to 5 #3722

Job	Run time
downgrade	1h 7m 7s
test (1.10, ubuntu-latest, core_layers)	17m 2s
test (1.10, ubuntu-latest, normalize_layers)	13m 39s
test (1.10, ubuntu-latest, recurrent_layers)	19m 21s
test (1.10, ubuntu-latest, autodiff)	23m 29s
test (1.10, ubuntu-latest, misc)	29m 37s
test (1.10, ubuntu-latest, reactant)	10m 55s
test (1, ubuntu-latest, core_layers)	18m 43s
test (1, ubuntu-latest, normalize_layers)	16m 40s
test (1, ubuntu-latest, recurrent_layers)	23m 10s
test (1, ubuntu-latest, autodiff)	24m 43s
test (1, ubuntu-latest, misc)	32m 19s
test (1, ubuntu-latest, reactant)	15m 21s
test (1, macos-latest, all)	4h 24m 37s
test (1, windows-latest, all)	1h 13m 13s
	10h 49m 56s

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