Bump serde_json from 1.0.81 to 1.0.91 in /red-server#216

dependabot[bot] wants to merge 1 commit intomastergreshilov/rust-event-driven-simulation:masterfrom

dependabot/cargo/red-server/serde_json-1.0.91greshilov/rust-event-driven-simulation:dependabot/cargo/red-server/serde_json-1.0.91Copy head branch name to clipboard