Update python toolchain to 3.12 and upgrade pip deps #2880

Job	Run time
env-protect-setup	6s
authorize	3s
get-dev-image / get-image	6s
clang-tidy	1m 59s
generate-matrix	3m 8s
code-coverage	0s
build-and-test (Clang opt + UI, nokvm, --config=clang --compilation_mode=opt, bazel_buildables_cl...	2m 40s
build-and-test (Go race detector, nokvm, --config=go_race --compilation_mode=opt, bazel_buildable...	2m 20s
build-and-test-status	3s
	10m 25s

Provide feedback