Bump vue-tsc from 1.8.20 to 1.8.21 in /frontend

Bumps vue-tsc from 1.8.20 to 1.8.21.

Changelog

Sourced from vue-tsc's changelog.

1.8.21 (2023/10/25)

Volar.js 1.10.5 updates:

• fix(monaco): completion cannot insert text starting with $ (volarjs/volar.js#69)
• fix(typescript): automatic type acquisition not working since v1.10.0

Commits

• 46ae2ff v1.8.21
• c7c6243 chore: bump volar
• 40de14c chore: update dts.spec.ts.snap
• 998015f chore: reuse component meta cases for dts test
• 9ca5dcd chore: rename test-workspace folders
• ce5623e refactor: reorganize packages (#3685)
• See full diff in compare view

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