Bump notify version to 5.0.0-pre.12
Bump notify version to 5.0.0-pre.12

Co-authored-by: Laurențiu Nicola <89aea4f235fcfad28c7d4fd64f485d9672fc8c33@users.noreply.github.com>
rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer