ISO8601 timestamp input fields do not accept "+00:00" as zone designator, only "Z"

(#820) Bug Needs triage api

Thread

Comment by @massmarketconsumer-arch
RexSystem 1 vote originally by @massmarketconsumer-arch on GitHub
I have investigated this issue and implemented a complete fix across both the schema validation (z.iso.datetime({offset: true}) in GuildRequestSchemas.ts and UserRequestSchemas.ts) and the Gateway parser (parse_iso8601_to_unix_ms in fluxer_gateway/src/utils/utils.erl) to support UTC offset designators (+00:00 / -00:00). All test suites pass. May I please be approved to submit the pull request?