Upgrade ego-tree to 0.11.0 and html5ever to 0.37.1

[cfvescovo]

• Bump ego-tree from 0.10.0 to 0.11.0
• Bump html5ever from 0.36.0 to 0.37.1
• Bump tendril from 0.4.3 to 0.5.0 (required by html5ever 0.37.1)
• Implement clone_subtree() method for TreeSink trait

[Copilot]

Pull request overview

This PR upgrades the HTML parsing stack (ego-tree, html5ever, tendril) and updates the HtmlTreeSink to implement the new TreeSink::clone_subtree API, along with minor logging modernizations.

Changes:

• Bump ego-tree to 0.11.0, html5ever to 0.37.1, and tendril to 0.5.0 to keep dependencies current and compatible.
• Implement TreeSink::clone_subtree for HtmlTreeSink by delegating to ego_tree’s clone_subtree and returning the new node’s NodeId.
• Modernize error printing in scraper/src/main.rs to use captured format arguments.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

File	Description
scraper/src/main.rs	Switches eprintln! calls to captured-format syntax, preserving behavior while updating style.
scraper/src/html/tree_sink.rs	Adds a clone_subtree implementation that clones a subtree via ego_tree and returns the cloned root’s handle, matching the updated TreeSink trait.
scraper/Cargo.toml	Updates direct dependency versions for ego-tree, html5ever, and tendril to the new releases.
Cargo.lock	Regenerates lockfile to reflect updated crate versions and transitive dependency changes.

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