Bump svelte from 3.23.2 to 3.49.0 in /squadmap

Bumps [svelte](https://github.com/sveltejs/svelte) from 3.23.2 to 3.49.0.
- [Release notes](https://github.com/sveltejs/svelte/releases)
- [Changelog](https://github.com/sveltejs/svelte/blob/master/CHANGELOG.md)
- [Commits](sveltejs/svelte@v3.23.2...v3.49.0)

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

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

squadmap/package.json

@@ -21,7 +21,7 @@
     "rollup-plugin-livereload": "^1.0.0",
     "rollup-plugin-svelte": "^5.0.3",
     "rollup-plugin-terser": "^5.1.2",
-    "svelte": "^3.0.0",
+    "svelte": "^3.49.0",
     "svelte-jester": "^1.0.6",
     "svelte-preprocess": "^3.9.11",
     "typescript": "^3.9.6"