chore: bump tauri from 1.6.2 to 1.6.8 in /src-tauri (#993)

Bumps [tauri](https://github.com/tauri-apps/tauri) from 1.6.2 to 1.6.8.
- [Release notes](https://github.com/tauri-apps/tauri/releases)
- [Commits](tauri-apps/tauri@tauri-v1.6.2...tauri-v1.6.8)

---
updated-dependencies:
- dependency-name: tauri
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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