build(deps-dev): bump @vscode/vsce from 2.31.1 to 3.1.0 in /code

Bumps [@vscode/vsce](https://github.com/Microsoft/vsce) from 2.31.1 to 3.1.0.
- [Release notes](https://github.com/Microsoft/vsce/releases)
- [Commits](microsoft/vscode-vsce@v2.31.1...v3.1.0)

---
updated-dependencies:
- dependency-name: "@vscode/vsce"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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