build(deps-dev): bump svelte-check from 3.7.1 to 3.8.4

Bumps [svelte-check](https://github.com/sveltejs/language-tools) from 3.7.1 to 3.8.4.
- [Release notes](https://github.com/sveltejs/language-tools/releases)
- [Commits](sveltejs/language-tools@svelte-check-3.7.1...svelte-check-3.8.4)

---
updated-dependencies:
- dependency-name: svelte-check
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -87,7 +87,7 @@
     "sass": "^1.77.8",
     "sirv-cli": "^2.0.2",
     "svelte": "^3.59.2",
-    "svelte-check": "^3.7.1",
+    "svelte-check": "^3.8.4",
     "svelte-preprocess": "^5.1.3",
     "sveltestrap": "^5.11.3",
     "tslib": "^2.6.3",