Bump html5ever from 0.26.0 to 0.27.0

Bumps [html5ever](https://github.com/servo/html5ever) from 0.26.0 to 0.27.0.
- [Commits](servo/html5ever@html5ever-v0.26.0...v0.27.0)

---
updated-dependencies:
- dependency-name: html5ever
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Cargo.toml

@@ -15,7 +15,7 @@ readme = "README.md"
 [dependencies]
 cssparser = "0.31.0"
 ego-tree = "0.6.2"
-html5ever = "0.26"
+html5ever = "0.27"
 selectors = "0.25.0"
 tendril = "0.4.3"
 ahash = "0.8"