Rust

Setup dependabot to do `rust-toolchain` updates #72143

Job	Run time
linux build test	7m 37s
Check cargo fmt	1m 57s
Check GitHub Actions install tooling	6s
cargo test (macos-aarch64)	9m 6s
Verify Vendored Code	1m 39s
Verify MSRV (Min Supported Rust Version)	7m 21s
build and run with wasm-pack	6m 51s
cargo check datafusion features	14m 38s
cargo check datafusion-common features	2m 9s
cargo check datafusion-ffi features	2m 22s
cargo check datafusion-substrait features	12m 25s
cargo check datafusion-functions features	2m 46s
check example README is up-to-date	7m 37s
cargo check datafusion-proto features	5m 40s
cargo test doc (amd64)	8m 43s
cargo test (amd64)	19m 5s
verify benchmark results (amd64)	13m 49s
cargo test datafusion-cli (amd64)	7m 11s
check configs.md and ***_functions.md is up-to-date	6m 35s
cargo doc	5m 39s
cargo examples (amd64)	16m 29s
Run sqllogictest in Substrait round-trip mode	9m 21s
Run sqllogictest with Postgres runner	8m 48s
check Cargo.toml formatting	1m 18s
clippy	9m 46s
	3h 8m 58s

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