BREAKING: remove cjs build & update min node to 20

[UziTech]

Description

BREAKING CHANGES

• minify ./lib/marked.esm.js and ./lib/marked.umd.js
• remove ./marked.min.js use ./lib/marked.umd.js instead
• remove ./lib/marked.cjs
• update minimum supported node version to 20 to support require('marked.esm.js'). see https://nodejs.org/docs/latest-v20.x/api/modules.html#loading-ecmascript-modules-using-require

Contributor

• [x] Test(s) exist to ensure functionality and minimize regression (if no tests added, list tests covering this PR); or,
• [ ] no tests required for this PR.
• [ ] If submitting new feature, it has been documented in the appropriate places.

Committer

In most cases, this should be a different person than the contributor.

• [ ] CI is green (no forced merge required).
• [ ] Squash and Merge PR following conventional commit guidelines.

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Name	Status	Preview	Comments	Updated (UTC)
marked-website	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 27, 2025 4:39am

[UziTech]

I think this is ready to go, but I am going to wait to merge this for a month so we can bundle any other breaking changes together.