Bump @google/clasp in /samples/datatrue-solution-design

Bumps [@google/clasp](https://github.com/google/clasp) from 2.5.0 to 3.1.3.
- [Release notes](https://github.com/google/clasp/releases)
- [Changelog](https://github.com/google/clasp/blob/master/CHANGELOG.md)
- [Commits](google/clasp@2.5.0...v3.1.3)

---
updated-dependencies:
- dependency-name: "@google/clasp"
  dependency-version: 3.1.3
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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Author: dependabot[bot]