build: Bump apache-avro from `99d5f3f` to `81a44a1` in /backend#551

dependabot[bot] wants to merge 1 commit intomainandrewinci/insulator2:mainfrom

dependabot/cargo/backend/apache-avro-81a44a1andrewinci/insulator2:dependabot/cargo/backend/apache-avro-81a44a1Copy head branch name to clipboard