Bump ajv from 6.10.2 to 6.12.6 in /examples/plain-sync#309

dependabot[bot] wants to merge 1 commit intomasterteimurjan/sync-query-redux:masterfrom

dependabot/npm_and_yarn/examples/plain-sync/ajv-6.12.6teimurjan/sync-query-redux:dependabot/npm_and_yarn/examples/plain-sync/ajv-6.12.6Copy head branch name to clipboard