Auto merge of #108253 - nnethercote:ena-rm-VarValue-methods, r=joshtriplett

Upgrade to ena-0.14.1.

It avoids some inlining within its `inlined_probe_value` function, which seems to result in better codegen for the very large `process_obligations` function within rustc. It might also help with reducing the bimodal perf results we see for the `keccak` and `cranelift-codegen-0.82.1` benchmarks.

r? `@ghost`

Author: bors