feat: add performance benchmark example and update dependencies

- Add benchmark.rs example that generates complex data 100,000 times
- Demonstrates combination of fake operators and JSONLogic expressions
- Updates fake dependency from 2.9 to 4.3 for improved features
- Updates rand from 0.8 to 0.9 and thiserror from 1.0 to 2.0
- Fixes deprecated rand API calls (thread_rng().gen() to rng().random())
- Benchmark shows ~18,000+ generations per second performance

Author: shankar-gpio

Cargo.lock

@@ -20,11 +20,11 @@ rust-version = "1.70"
 
 [dependencies]
 datalogic-rs = "3.0.34"
-fake = { version = "2.9", features = ["derive", "chrono", "uuid"] }
+fake = { version = "4.3", features = ["derive", "chrono", "uuid"] }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
-thiserror = "1.0"
-rand = "0.8"
+thiserror = "2.0"
+rand = "0.9"
 chrono = { version = "0.4", features = ["serde"] }
 
 [dev-dependencies]