CI: replace macOS-11 with macOS-14 #13473

Job	Run time
pl-cpu (macOS-14, lightning, 3.10, 2.0)	13m 27s
pl-cpu (ubuntu-20.04, lightning, 3.10, 2.0)	13m 22s
pl-cpu (windows-2022, lightning, 3.10, 2.0)	16m 17s
pl-cpu (macOS-14, lightning, 3.10, 2.1)	13m 53s
pl-cpu (ubuntu-20.04, lightning, 3.10, 2.1)	15m 29s
pl-cpu (windows-2022, lightning, 3.10, 2.1)	17m 30s
pl-cpu (macOS-14, lightning, 3.10, 2.2)	13m 43s
pl-cpu (ubuntu-20.04, lightning, 3.10, 2.2)	14m 59s
pl-cpu (windows-2022, lightning, 3.10, 2.2)	17m 33s
pl-cpu (macOS-14, lightning, 3.10, 2.3)	13m 42s
pl-cpu (ubuntu-20.04, lightning, 3.10, 2.3)	15m 25s
pl-cpu (windows-2022, lightning, 3.10, 2.3)	18m 43s
pl-cpu (macOS-12, pytorch, 3.11, 2.0)	24m 34s
pl-cpu (ubuntu-22.04, pytorch, 3.11, 2.0)	14m 39s
pl-cpu (windows-2022, pytorch, 3.11, 2.0)	17m 2s
pl-cpu (macOS-12, pytorch, 3.11, 2.1)	24m 15s
pl-cpu (ubuntu-22.04, pytorch, 3.11, 2.1)	14m 15s
pl-cpu (windows-2022, pytorch, 3.11, 2.1)	16m 30s
pl-cpu (macOS-13, lightning, 3.8, 2.0, oldest)	21m 42s
pl-cpu (ubuntu-20.04, lightning, 3.8, 2.0, oldest)	14m 16s
pl-cpu (windows-2022, lightning, 3.8, 2.0, oldest)	15m 47s
pl-cpu (macOS-14, pytorch, 3.8, 2.0)	14m 43s
pl-cpu (ubuntu-20.04, pytorch, 3.8, 2.0)	13m 36s
pl-cpu (windows-2022, pytorch, 3.8, 2.0)	15m 46s
	6h 31m 8s

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