Bump tauri-plugin-autostart from 81676da to c6836d7 in /src-tauri

Bumps [tauri-plugin-autostart](https://github.com/tauri-apps/plugins-workspace) from `81676da` to `c6836d7`.
- [Release notes](https://github.com/tauri-apps/plugins-workspace/releases)
- [Commits](tauri-apps/plugins-workspace@81676da...c6836d7)

---
updated-dependencies:
- dependency-name: tauri-plugin-autostart
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>