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Bumps [scratch-gui](https://github.com/LLK/scratch-gui) from 0.1.0-prerelease.20200618175748 to 0.1.0-prerelease.20200618185940.
- [Release notes](https://github.com/LLK/scratch-gui/releases)
- [Commits](https://github.com/LLK/scratch-gui/compare/0.1.0-prerelease.20200618175748...0.1.0-prerelease.20200618185940)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>