Bump bumpalo from 3.8.0 to 3.15.4 in /complete_blockchain#3

dependabot[bot] wants to merge 1 commit intomainPacktPublishing/Rust-for-Blockchain-Application-Development:mainfrom

dependabot/cargo/complete_blockchain/bumpalo-3.15.4PacktPublishing/Rust-for-Blockchain-Application-Development:dependabot/cargo/complete_blockchain/bumpalo-3.15.4Copy head branch name to clipboard