Rust

Minor: reuse Rows buffer in GroupValuesRows #3388

Job	Run time
cargo check	8m 5s
Check cargo fmt	39s
build with wasm-pack	2m 24s
Verify MSRV (Min Supported Rust Version)	6m 54s
cargo test (macos-aarch64)	9m 31s
cargo test (macos)	11m 48s
Verify Vendored Code	48s
cargo test (win64)	34m 15s
check configs.md is up-to-date	2m 47s
cargo test hash collisions (amd64)	9m 0s
check Cargo.toml formatting	2m 50s
clippy	5m 24s
cargo doc	3m 38s
cargo test datafusion-cli (amd64)	3m 36s
cargo test doc (amd64)	12m 40s
cargo test (amd64)	9m 36s
cargo examples (amd64)	11m 41s
Run sqllogictest with Postgres runner	3m 31s
cargo test pyarrow (amd64)	2m 46s
verify benchmark results (amd64)	11m 2s
	2h 32m 55s

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