Bump ego-tree from 0.8.0 to 0.9.0

Bumps [ego-tree](https://github.com/rust-scraper/ego-tree) from 0.8.0 to 0.9.0.
- [Release notes](https://github.com/rust-scraper/ego-tree/releases)
- [Commits](rust-scraper/ego-tree@v0.8.0...v0.9.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -14,7 +14,7 @@ readme = "README.md"
 
 [dependencies]
 cssparser = "0.31.0"
-ego-tree = "0.8.0"
+ego-tree = "0.9.0"
 html5ever = "0.27"
 selectors = "0.25.0"
 tendril = "0.4.3"