chore(deps): bump @blockly/theme-modern from 6.0.7 to 6.0.10 (#8728)

Bumps [@blockly/theme-modern](https://github.com/google/blockly-samples/tree/HEAD/plugins/theme-modern) from 6.0.7 to 6.0.10.
- [Release notes](https://github.com/google/blockly-samples/releases)
- [Changelog](https://github.com/google/blockly-samples/blob/master/plugins/theme-modern/CHANGELOG.md)
- [Commits](https://github.com/google/blockly-samples/commits/@blockly/[email protected]/plugins/theme-modern)

---
updated-dependencies:
- dependency-name: "@blockly/theme-modern"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>