chore(deps): Update dependencies across packages

This commit updates several dependencies in the frontend and backend packages.

- **Backend:**
  - Upgrades `xlsx` to version `0.20.3` by pointing to the official CDN URL. This ensures usage of the community edition with a permissive license.
  - Removes the unused `bull-board` development dependency.

- **Frontend:**
  - Upgrades `@sveltejs/kit` from `^2.16.0` to `^2.38.1` to stay current with the latest features and fixes.

packages/backend/package.json

@@ -59,7 +59,7 @@
 		"reflect-metadata": "^0.2.2",
 		"sqlite3": "^5.1.7",
 		"tsconfig-paths": "^4.2.0",
-		"xlsx": "^0.18.5",
+		"xlsx": "https://cdn.sheetjs.com/xlsx-0.20.3/xlsx-0.20.3.tgz",
 		"yauzl": "^3.2.0",
 		"zod": "^4.1.5"
 	},
@@ -74,7 +74,6 @@
 		"@types/multer": "^2.0.0",
 		"@types/node": "^24.0.12",
 		"@types/yauzl": "^2.10.3",
-		"bull-board": "^2.1.3",
 		"ts-node-dev": "^2.0.0",
 		"typescript": "^5.8.3"
 	}

packages/frontend/package.json

@@ -15,7 +15,7 @@
 	"dependencies": {
 		"@iconify/svelte": "^5.0.1",
 		"@open-archiver/types": "workspace:*",
-		"@sveltejs/kit": "^2.16.0",
+		"@sveltejs/kit": "^2.38.1",
 		"bits-ui": "^2.8.10",
 		"clsx": "^2.1.1",
 		"d3-shape": "^3.2.0",