fix(deps): update rust crate similar to v3

Author: renovate[bot]

Cargo.lock

@@ -27,7 +27,7 @@ crossterm = { version = "0.29", features = ["event-stream"] }
 url = "2"
 anyhow = "1"
 pulldown-cmark = "0.13"
-similar = "2"
+similar = "3"
 fuzzy-matcher = "0.3"
 syntect = { version = "5", default-features = false, features = ["default-syntaxes", "default-themes", "regex-onig"] }
 unicode-width = "0.2"