chore: bump vue-tsc from 1.8.20 to 1.8.21 in /src-vue (#646)

Bumps [vue-tsc](https://github.com/vuejs/language-tools/tree/HEAD/packages/tsc) from 1.8.20 to 1.8.21.
- [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/v1.8.21/packages/tsc)

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

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src-vue/package.json

@@ -23,6 +23,6 @@
     "@vitejs/plugin-vue": "^3.1.0",
     "typescript": "^5.2.2",
     "vite": "^3.1.0",
-    "vue-tsc": "^1.8.20"
+    "vue-tsc": "^1.8.21"
   }
 }