v0.3.2

Update dependencies and enhance connection handling in Proxer CLI

• Bump versions of hyper (1.5.2), serde (1.0.216), and proxer-cli (0.3.2) in Cargo.toml and Cargo.lock.
• Introduce rlimit dependency (0.10.2) for managing open connection limits.
• Refactor connection handling in src/server/mod.rs, src/server/proxy.rs, and src/server/tunnel.rs to improve error handling and connection management with timeouts.
• Replace direct usage of TokioIo::new(stream) with a consistent approach across the server modules.