chore(release): 18.0.0 [skip ci]

# [18.0.0](https://github.com/markedjs/marked/compare/v17.0.6...v18.0.0) (2026-04-07)

### Bug Fixes

* Bump typescript from 5.9.3 to 6.0.2 ([#3934](https://github.com/markedjs/marked/issues/3934)) ([e8efc51](https://github.com/markedjs/marked/commit/e8efc51d36d97dab310214bcb3a7875170fb56ff))
* prevent GFM table tokens from greedily capturing trailing newlines ([#3926](https://github.com/markedjs/marked/issues/3926)) ([40f2665](https://github.com/markedjs/marked/commit/40f266560a9d612d91242f0014ecd31917c7d0cd))
* prevent heading and def tokens from greedily capturing multiple newlines ([#3925](https://github.com/markedjs/marked/issues/3925)) ([b379e3e](https://github.com/markedjs/marked/commit/b379e3e57175472e53d7448147097a91df132a4d))
* trim blank lines from block tokens ([#3939](https://github.com/markedjs/marked/issues/3939)) ([b70895f](https://github.com/markedjs/marked/commit/b70895f47b818bfe49daf32c6f00fb5dcfaed299))

### BREAKING CHANGES

* trim trailing blank lines from block tokens
* update Typescript to v6