fix(deps): update dependency slackify-markdown to v5

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
slackify-markdown	^4.3.1 → ^5.0.0

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Release Notes

jsarafajr/slackify-markdown (slackify-markdown)

v5.0.0: - TypeScript Rewrite & ESM

Compare Source

Release Notes:

🚀 Major Changes

TypeScript Rewrite & ESM-Only (#​50)

• Complete rewrite in TypeScript with full type definitions
• Breaking Change: Now exclusively ESM (ECMAScript Modules) - CommonJS no longer supported
• Improved type safety and developer experience
• Modern module system for better tree-shaking and compatibility

✨ Enhancements

HTML Comment Stripping (#​51)

• HTML comments are now automatically removed from Slack output
• Cleaner markdown-to-Slack conversion without unwanted comment artifacts

🐛 Bug Fixes

Multiline Blockquote Support (#​52)

• Fixed handling of multiline blockquotes for proper Slack formatting
• Blockquotes now correctly preserve multi-line content

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⚠️ Breaking Changes

This release contains breaking changes:

• Node.js: Requires Node.js environment with ESM support

Before (v4.x - CommonJS):
const slackifyMarkdown = require('slackify-markdown');

After (v5.x - ESM):
import { slackifyMarkdown } from 'slackify-markdown';

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Configuration

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