py-keras: add v3.12.0 (#2134) #26

Job	Run time
changes	31s
prechecks / validate	32s
prechecks / verify-checksums	12s
prechecks / style	20s
prechecks / package.py canonicalization	3m 3s
prechecks / audit / package-audits (ubuntu-latest, bash)	4m 32s
prechecks / audit / package-audits (windows-latest, powershell)	4m 59s
prechecks / audit / package-audits (macos-latest, bash)	5m 21s
all-prechecks	4s
unit-tests / macos (macos-15, 3.11)	3m 13s
unit-tests / ubuntu (ubuntu-latest, 3.8, true)	1m 7s
unit-tests / ubuntu (ubuntu-latest, 3.9, true)	1m 9s
unit-tests / ubuntu (ubuntu-latest, 3.10, true)	1m 9s
unit-tests / windows	51s
unit-tests / ubuntu (3.7, ubuntu-22.04, true)	56s
unit-tests / macos (macos-15-intel, 3.11)	3m 4s
unit-tests / ubuntu (ubuntu-latest, 3.12, true)	1m 8s
unit-tests / ubuntu (ubuntu-latest, 3.11, true)	2m 29s
all	2s
	34m 42s

Provide feedback