Bump json-schema and jsprim in /example/test_harness#453

dependabot[bot] wants to merge 1 commit intomainably/ably-flutter:mainfrom

dependabot/npm_and_yarn/example/test_harness/json-schema-and-jsprim-0.4.0ably/ably-flutter:dependabot/npm_and_yarn/example/test_harness/json-schema-and-jsprim-0.4.0Copy head branch name to clipboard