Bump to LLVM with nanobind reverts #33287

Job	Run time
setup / setup	6s
runtime_small	2m 21s
runtime_tracing :: tracy provider	2m 28s
runtime_tracing :: console provider	1m 5s
runtime :: ubuntu-24.04	1m 28s
runtime :: windows-2022	3m 7s
runtime :: macos-14	1m 22s
linux_x64_bazel / linux_x64_bazel	22m 31s
linux_x64_clang / linux_x64_clang	6m 42s
linux_x64_clang_asan / linux_x64_clang_asan	20m 1s
ci_summary / summary	3s
	1h 1m 14s

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