Update copy-webpack-plugin to version 3.0.1 🚀

[greenkeeperio-bot]

Hello 👋

🚀🚀🚀

copy-webpack-plugin just published its new version 3.0.1, which is not covered by your current version range.

If this pull request passes your tests you can publish your software with the latest version of copy-webpack-plugin – otherwise use this branch to work on adaptions and fixes.

Happy fixing and merging 🌴

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The new version differs by 4 commits .

• 3b1a451 3.0.1
• 7d07baf Fix subdirectory errors in blob patterns
• 544587b Update formatting
• 82052dd Merge pull request #49 from kevlened/remove-filesystem-write

See the full diff.

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