Bump github.com/slack-go/slack from 0.19.0 to 0.20.0

[dependabot]

Bumps github.com/slack-go/slack from 0.19.0 to 0.20.0.

Release notes

Sourced from github.com/slack-go/slack's releases.

v0.20.0

[!WARNING] trigger_id and workflow_id are NOT in any documentation or in any of the official libraries, so exercise caution if you use these.

Added

• workflow_id and trigger_id in Message — It seems that some types of messages, e.g: bot_message, can carry trigger_id and workflow_id. WorkflowID was added by @​clayallsopp in slack-go/slack#1537
• RichTextQuote.Border field — optional border toggle (matches the docs now)
• RichTextPreformatted.Language field — enables syntax highlighting for preformatted blocks

Fixed

• Remove embedding of RichTextSection — RichTextQuote and RichTextPreformatted are now flattened as they should have always been. This is a breaking change for anyone using these structs directly.

New Contributors

• @​clayallsopp made their first contribution in slack-go/slack#1537

Full Changelog: slack-go/slack@v0.19.0...v0.20.0

Changelog

Sourced from github.com/slack-go/slack's changelog.

[0.20.0] - 2026-03-21

[!WARNING] trigger_id and workflow_id are NOT in any documentation or in any of the official libraries, so exercise caution if you use these.

Added

• workflow_id and trigger_id in Message — It seems that some types of messages, e.g: bot_message, can carry trigger_id and workflow_id.
• RichTextQuote.Border field — optional border toggle (matches the docs now)
• RichTextPreformatted.Language field — enables syntax highlighting for preformatted blocks

Fixed

• Remove embedding of RichTextSection — RichTextQuote and RichTextPreformatted are now flattened as they should have always been. This is a breaking change for anyone using these structs directly.

Commits

• 449e341 chore: v0.20.0
• 442f330 chore: update CHANGELOG
• 0b4eb25 feat!: flatten RichTextPreformatted to remove RichTextSection embedding
• 46d7b49 feat!: add Border to RichTextQuote and Language to RichTextPreformatted
• c93b916 Revise warning for trigger_id and workflow_id
• 561f12f feat: add TriggerID to Message
• 8e62a1a Add WorkflowID to message (#1537)
• 891d7e5 chore: add golangci-lint to mise
• 8917d11 docs: update README with links and remove old warning
• See full diff in compare view

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[what-the-diff]

PR Summary

• Updated Dependency Version
  The code that enables interaction with Slack has recently been improved by its creators. This PR ensures our platform uses this new, improved version.

• Updated Dependency Checksum
  Alongside the version update for the Slack integration, this PR also adjusts our system's internal records to match this new version, enabling seamless function and ensuring our system remains secure and consistent.