Update core2 requirement from 0.3.0 to 0.4.0 in /lightning#10

dependabot[bot] wants to merge 1 commit intomainvss96/rust-lightning:mainfrom

dependabot/cargo/lightning/core2-0.4.0vss96/rust-lightning:dependabot/cargo/lightning/core2-0.4.0Copy head branch name to clipboard