[release/3.1] (deps): Bump src/submodules/MessagePack-CSharp from `8861abd` to `6caf299`#6

dependabot[bot] wants to merge 1 commit intorelease/3.1adrianwright109/aspnetcore:release/3.1from

dependabot/submodules/release/3.1/src/submodules/MessagePack-CSharp-6caf299adrianwright109/aspnetcore:dependabot/submodules/release/3.1/src/submodules/MessagePack-CSharp-6caf299Copy head branch name to clipboard