Backported serde build fix in #1912 to multiadd 0.7.3#1

sdbondi wants to merge 1 commit intobase-v0.16.2tari-project/rust-libp2p:base-v0.16.2from

sb-backport-1912tari-project/rust-libp2p:sb-backport-1912Copy head branch name to clipboard