Bump svelte from 4.2.8 to 4.2.19 in /museum_map/server/frontend

Bumps [svelte](https://github.com/sveltejs/svelte/tree/HEAD/packages/svelte) from 4.2.8 to 4.2.19.
- [Release notes](https://github.com/sveltejs/svelte/releases)
- [Changelog](https://github.com/sveltejs/svelte/blob/svelte@4.2.19/packages/svelte/CHANGELOG.md)
- [Commits](https://github.com/sveltejs/svelte/commits/svelte@4.2.19/packages/svelte)

---
updated-dependencies:
- dependency-name: svelte
  dependency-type: direct:development
...

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

museum_map/server/frontend/package.json

@@ -17,7 +17,7 @@
     "deepcopy": "^2.1.0",
     "history": "^5.3.0",
     "phaser": "^3.70.0",
-    "svelte": "^4.2.8",
+    "svelte": "^4.2.19",
     "svelte-check": "^3.6.2",
     "tailwindcss": "^3.3.6",
     "tslib": "^2.6.2",