Bump vue-tsc from 2.1.6 to 2.1.8 in /webapp

Bumps [vue-tsc](https://github.com/vuejs/language-tools/tree/HEAD/packages/tsc) from 2.1.6 to 2.1.8.
- [Release notes](https://github.com/vuejs/language-tools/releases)
- [Changelog](https://github.com/vuejs/language-tools/blob/master/CHANGELOG.md)
- [Commits](https://github.com/vuejs/language-tools/commits/v2.1.8/packages/tsc)

---
updated-dependencies:
- dependency-name: vue-tsc
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

webapp/package.json

@@ -45,7 +45,7 @@
     "vite": "^5.4.9",
     "vite-plugin-compression": "^0.5.1",
     "vite-plugin-css-injected-by-js": "^3.5.2",
-    "vue-tsc": "^2.1.6"
+    "vue-tsc": "^2.1.8"
   },
   "packageManager": "yarn@1.22.22+sha512.a6b2f7906b721bba3d67d4aff083df04dad64c399707841b7acf00f6b133b7ac24255f2652fa22ae3534329dc6180534e98d17432037ff6fd140556e2bb3137e"
 }