Rust

Update hashbrown requirement from 0.14.5 to 0.15.1 #709

Job	Run time
cargo check	35s
build with wasm-pack	41s
Check cargo fmt	40s
cargo test (macos)	20s
cargo test (macos-aarch64)	18s
Verify MSRV (Min Supported Rust Version)	4m 38s
Verify Vendored Code	39s
cargo test (win64)	48s
cargo test pyarrow (amd64)	0s
cargo doc	0s
verify benchmark results (amd64)	0s
Run sqllogictest with Postgres runner	0s
clippy	0s
cargo test hash collisions (amd64)	0s
cargo test datafusion-cli (amd64)	0s
cargo test (amd64)	0s
cargo test doc (amd64)	0s
cargo examples (amd64)	0s
check Cargo.toml formatting	0s
check configs.md is up-to-date	0s
	8m 39s

Provide feedback