build(deps-dev): bump vega-interpreter from 1.0.4 to 1.2.1

Bumps [vega-interpreter](https://github.com/vega/vega) from 1.0.4 to 1.2.1.
- [Release notes](https://github.com/vega/vega/releases)
- [Commits](https://github.com/vega/vega/commits)

---
updated-dependencies:
- dependency-name: vega-interpreter
  dependency-version: 1.2.1
  dependency-type: indirect
...

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

Author: dependabot[bot]