fix(deps): move zstd to 0.14.3 for RUSTSEC-2026-0391/0398/0403 - #88

The title and body describe a pure dependency bump from zstd 0.13 to 0.14.3, and the diff shows exactly that: a single version change in the workspace Cargo.toml. The claimed no-code-changes is consistent with the diff, and lockfile updates are described. Nothing in the diff contradicts the description, so no description defect. _The code index is behind this pull request (indexed at `798affc6421f`), so retrieved context may be out of date._

No findings.