fix(deps): update module github.com/slack-go/slack to v0.14.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
github.com/slack-go/slack	v0.13.1 -> v0.14.0

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Release Notes

slack-go/slack (github.com/slack-go/slack)

### [`v0.14.0`](https://togithub.com/slack-go/slack/releases/tag/v0.14.0) [Compare Source](https://togithub.com/slack-go/slack/compare/v0.13.1...v0.14.0) #### What's Changed v0.14.0 is now available. It contains **no breaking changes** but does include several pieces of new functionality and long-standing bug fixes. ##### Enhancements - Added Support for receiving `metadata` when receiving a `MessageEvent` over WebSocket by [@​rfratto](https://togithub.com/rfratto) in [https://github.com/slack-go/slack/pull/1307](https://togithub.com/slack-go/slack/pull/1307) - Added a new field to expose file data when receiving a `File` event from a Slack Connect Channel by [@​zFlabmonsta](https://togithub.com/zFlabmonsta) in [https://github.com/slack-go/slack/pull/1312](https://togithub.com/slack-go/slack/pull/1312) - Added support for the `slack_file` in the image block by [@​rhysm](https://togithub.com/rhysm) in [https://github.com/slack-go/slack/pull/1311](https://togithub.com/slack-go/slack/pull/1311) - Added 35 missing Websocket event types by [@​Aryakoste](https://togithub.com/Aryakoste) in [https://github.com/slack-go/slack/pull/1306](https://togithub.com/slack-go/slack/pull/1306) - Added support for parsing `AppRateLimited` events in the `ParseEvent` function by [@​nemuvski](https://togithub.com/nemuvski) in [https://github.com/slack-go/slack/pull/1308](https://togithub.com/slack-go/slack/pull/1308) - Added newly documented Channel Canvas properties to the `conversations.info` Web API method by [@​ku](https://togithub.com/ku) in [https://github.com/slack-go/slack/pull/1228](https://togithub.com/slack-go/slack/pull/1228) ##### Bug Fixes - Fixed an edge case when using `UpdateRemoteFileContext` and `UpdateRemoteFile` and Image Previews would return an `invalid_auth` error by [@​EkeMinusYou](https://togithub.com/EkeMinusYou) in [https://github.com/slack-go/slack/pull/1117](https://togithub.com/slack-go/slack/pull/1117) ##### Chores / Code Cleanup - Replaced deprecated `ioutil` with `io` and `os` packages by [@​nakamasato](https://togithub.com/nakamasato) in [https://github.com/slack-go/slack/pull/1310](https://togithub.com/slack-go/slack/pull/1310) #### New Contributors - [@​rfratto](https://togithub.com/rfratto) made their first contribution in [https://github.com/slack-go/slack/pull/1307](https://togithub.com/slack-go/slack/pull/1307) - [@​nakamasato](https://togithub.com/nakamasato) made their first contribution in [https://github.com/slack-go/slack/pull/1310](https://togithub.com/slack-go/slack/pull/1310) - [@​rhysm](https://togithub.com/rhysm) made their first contribution in [https://github.com/slack-go/slack/pull/1311](https://togithub.com/slack-go/slack/pull/1311) - [@​Aryakoste](https://togithub.com/Aryakoste) made their first contribution in [https://github.com/slack-go/slack/pull/1306](https://togithub.com/slack-go/slack/pull/1306) - [@​nemuvski](https://togithub.com/nemuvski) made their first contribution in [https://github.com/slack-go/slack/pull/1308](https://togithub.com/slack-go/slack/pull/1308) - [@​ku](https://togithub.com/ku) made their first contribution in [https://github.com/slack-go/slack/pull/1228](https://togithub.com/slack-go/slack/pull/1228) - [@​EkeMinusYou](https://togithub.com/EkeMinusYou) made their first contribution in [https://github.com/slack-go/slack/pull/1117](https://togithub.com/slack-go/slack/pull/1117) - [@​jjjjeeffff](https://togithub.com/jjjjeeffff) was instrumental in the successful resolution of [https://github.com/slack-go/slack/pull/1117](https://togithub.com/slack-go/slack/pull/1117) **Full Changelog**: https://github.com/slack-go/slack/compare/v0.13.1...v0.14.0

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