chore: bump pulldown-cmark-to-cmark from 14.0.1 to 20.0.0

Bumps [pulldown-cmark-to-cmark](https://github.com/Byron/pulldown-cmark-to-cmark) from 14.0.1 to 20.0.0.
- [Release notes](https://github.com/Byron/pulldown-cmark-to-cmark/releases)
- [Changelog](https://github.com/Byron/pulldown-cmark-to-cmark/blob/main/CHANGELOG.md)
- [Commits](Byron/pulldown-cmark-to-cmark@v14.0.1...v20.0.0)

---
updated-dependencies:
- dependency-name: pulldown-cmark-to-cmark
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

web/book/Cargo.toml

@@ -25,7 +25,7 @@ mdbook = {version = "0.4.43", default-features = false}
 mdbook-preprocessor-boilerplate = "0.1.2"
 prqlc = {path = "../../prqlc/prqlc", default-features = false}
 pulldown-cmark = {version = "0.10.3", default-features = false}
-pulldown-cmark-to-cmark = "14.0.1"
+pulldown-cmark-to-cmark = "20.0.0"
 strum = {version = "0.26.3", features = ["std", "derive"]}
 strum_macros = "0.26.4"