Update Deno dependencies

[github-actions]

Some external modules are stale.

Details

📦 @std/assert 1.0.13 → 1.0.15
📦 @std/testing 1.0.12 → 1.0.16
📦 magic-string 0.30.17 → 0.30.19
📦 query-string 9.1.2 → 9.3.1
📦 svelte 5.30.2 → 5.39.11
📦 unconfig 7.3.2 → 7.3.3
📦 vite ^6.0.0 → ^7.0.0

[coderabbitai]

Important

Review skipped

Bot user detected.

To trigger a single review, invoke the @coderabbitai review command.

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}