chore(rust): Bump test-with from 0.15.5 to 0.15.6 in /rust#3783

dependabot[bot] wants to merge 1 commit intomainapache/arrow-adbc:mainfrom

dependabot/cargo/rust/test-with-0.15.6apache/arrow-adbc:dependabot/cargo/rust/test-with-0.15.6Copy head branch name to clipboard