chore(deps): update minijinja to 2.21

Author: dinosath

Cargo.toml

@@ -16,7 +16,7 @@ env_logger = "0.11"
 thiserror = "2.0"
 serde_json = "1.0"
 indexmap = { version = "2.14", features = ["serde"] }
-minijinja = { version = "2.20", features = [
+minijinja = { version = "2.21", features = [
     "builtins",
     "loop_controls",
     "loader",