chore(deps): bump html5ever from 0.29.1 to 0.39.0 in /bots/glambot

Bumps [html5ever](https://github.com/servo/html5ever) from 0.29.1 to 0.39.0.
- [Release notes](https://github.com/servo/html5ever/releases)
- [Commits](https://github.com/servo/html5ever/commits)

---
updated-dependencies:
- dependency-name: html5ever
  dependency-version: 0.39.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

bots/glambot/Cargo.lock

@@ -39,7 +39,7 @@ comrak = "0.29"
 
 # HTML parsing (for accessibility checks)
 scraper = "0.21"
-html5ever = "0.29"
+html5ever = "0.39"
 
 # Image metadata (for alt-text validation)
 image = "0.25"