Rust

perf: Improve performance of hex encoding in spark functions #55416

Job	Run time
linux build test	3m 19s
Verify MSRV (Min Supported Rust Version)	4m 31s
build and run with wasm-pack	4m 47s
Verify Vendored Code	1m 28s
cargo test (macos-aarch64)	12m 10s
Check cargo fmt	1m 12s
cargo test (amd64)	10m 53s
cargo check datafusion-proto features	4m 26s
cargo check datafusion-substrait features	10m 8s
cargo check datafusion-functions features	2m 32s
cargo check datafusion-common features	2m 2s
Run sqllogictest in Substrait round-trip mode	7m 8s
cargo check datafusion features	10m 39s
Run sqllogictest with Postgres runner	7m 19s
check configs.md and ***_functions.md is up-to-date	6m 1s
cargo test doc (amd64)	8m 48s
check example README is up-to-date	1m 50s
check Cargo.toml formatting	4m 38s
cargo test datafusion-cli (amd64)	5m 21s
cargo examples (amd64)	10m 0s
verify benchmark results (amd64)	11m 10s
cargo doc	4m 52s
clippy	5m 17s
	2h 20m 31s

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