chore: bump compat for MKL in [weakdeps] to 0.8 for package LuxLib, (… #4050

Job	Run time
downgrade	0s
test (1.10, ubuntu-latest, core_layers)	18m 26s
test (1.10, ubuntu-latest, normalize_layers)	20m 30s
test (1.10, ubuntu-latest, recurrent_layers)	28m 53s
test (1.10, ubuntu-latest, autodiff)	48m 34s
test (1.10, ubuntu-latest, misc)	32m 40s
test (1.10, ubuntu-latest, reactant)	13m 28s
test (1, ubuntu-latest, core_layers)	23m 15s
test (1, ubuntu-latest, normalize_layers)	25m 23s
test (1, ubuntu-latest, recurrent_layers)	35m 40s
test (1, ubuntu-latest, autodiff)	35m 43s
test (1, ubuntu-latest, misc)	39m 37s
test (1, ubuntu-latest, reactant)	18m 11s
	5h 40m 20s

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