build(deps): bump scratch-l10n

Bumps [scratch-l10n](https://github.com/LLK/scratch-l10n) from 3.13.20210718031500 to 3.13.20210720031509.
- [Release notes](https://github.com/LLK/scratch-l10n/releases)
- [Commits](https://github.com/LLK/scratch-l10n/compare/3.13.20210718031500...3.13.20210720031509

)

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