sandbox-npm(deps): bump @hapi/subtext from 8.1.1 to 8.1.2 in /sandbox

Bumps [@hapi/subtext](https://github.com/hapijs/subtext) from 8.1.1 to 8.1.2.
- [Release notes](https://github.com/hapijs/subtext/releases)
- [Commits](hapijs/subtext@v8.1.1...v8.1.2)

---
updated-dependencies:
- dependency-name: "@hapi/subtext"
  dependency-version: 8.1.2
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]