build(deps-dev): bump tslib from 2.6.3 to 2.8.1 in /web

Bumps [tslib](https://github.com/Microsoft/tslib) from 2.6.3 to 2.8.1.
- [Release notes](https://github.com/Microsoft/tslib/releases)
- [Commits](microsoft/tslib@v2.6.3...v2.8.1)

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

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

web/package.json

@@ -19,7 +19,7 @@
     "svelte": "^5.1.6",
     "svelte-check": "^3.8.5",
     "svelte-preprocess": "^6.0.2",
-    "tslib": "^2.6.3",
+    "tslib": "^2.8.1",
     "typescript": "^5.5.2",
     "vite": "^5.4.10",
     "vods.speedrun.club-client": "file:../api-client-ts"