fix(deps): update rust crate catppuccin to 2.1 (#145)

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

Cargo.toml

@@ -15,7 +15,7 @@ path = "src/main.rs"
 
 [dependencies]
 base64 = "0.22"
-catppuccin = { version = "2.0", features = ["css-colors"] }
+catppuccin = { version = "2.1", features = ["css-colors"] }
 indexmap = { version = "2.2", features = ["serde"] }
 clap = { version = "4.5", features = ["derive"] }
 clap-stdin = "0.4"