bump python 3.9+ #14271

Job	Run time
pl-cpu (macOS-14, lightning, 3.10, 2.1)	20m 0s
pl-cpu (ubuntu-20.04, lightning, 3.10, 2.1)	14m 41s
pl-cpu (windows-2022, lightning, 3.10, 2.1)	16m 16s
pl-cpu (macOS-14, lightning, 3.11, 2.2.2)	20m 19s
pl-cpu (ubuntu-20.04, lightning, 3.11, 2.2.2)	15m 28s
pl-cpu (windows-2022, lightning, 3.11, 2.2.2)	16m 56s
pl-cpu (macOS-14, lightning, 3.11, 2.3)	19m 42s
pl-cpu (ubuntu-20.04, lightning, 3.11, 2.3)	15m 39s
pl-cpu (windows-2022, lightning, 3.11, 2.3)	16m 50s
pl-cpu (macOS-14, lightning, 3.12, 2.4.1)	21m 39s
pl-cpu (ubuntu-22.04, lightning, 3.12, 2.4.1)	18m 58s
pl-cpu (windows-2022, lightning, 3.12, 2.4.1)	17m 32s
pl-cpu (macOS-14, lightning, 3.12, 2.5.1)	22m 42s
pl-cpu (ubuntu-22.04, lightning, 3.12, 2.5.1)	21m 14s
pl-cpu (windows-2022, lightning, 3.12, 2.5.1)	18m 18s
pl-cpu (macOS-14, pytorch, 3.12, 2.5.1)	21m 51s
pl-cpu (ubuntu-22.04, pytorch, 3.12, 2.5.1)	21m 25s
pl-cpu (windows-2022, pytorch, 3.12, 2.5.1)	18m 20s
pl-cpu (macOS-14, lightning, 3.9, 2.1, oldest)	18m 14s
pl-cpu (ubuntu-20.04, lightning, 3.9, 2.1, oldest)	12m 30s
pl-cpu (windows-2022, lightning, 3.9, 2.1, oldest)	15m 0s
pl-cpu (macOS-14, pytorch, 3.9, 2.1)	23m 12s
pl-cpu (ubuntu-20.04, pytorch, 3.9, 2.1)	14m 56s
pl-cpu (windows-2022, pytorch, 3.9, 2.1)	16m 52s
	7h 18m 34s

Provide feedback