chore(deps): update rust crate specta to v2.0.0-rc.20 (v2) (tauri-apps#1617)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Cargo.lock

@@ -20,7 +20,7 @@ thiserror = "1"
 url = "2"
 schemars = "0.8"
 dunce = "1"
-specta = "=2.0.0-rc.16"
+specta = "=2.0.0-rc.20"
 #tauri-specta = "=2.0.0-rc.11"
 
 [workspace.package]