An in-range update of pkg is breaking the build

## The devDependency [pkg](https://github.com/zeit/pkg) was updated from `4.4.0` to `4.4.1`. [View failing branch](https://github.com/datproject/dat/compare/master...datproject:greenkeeper%2Fpkg-4.4.1). This version is **covered** by your **current version range** and after updating it in your project **the build failed**. pkg is a devDependency of this project. It **might not break your production code or affect downstream projects**, but probably breaks your build or test tools, which may **prevent deploying or publishing**. Status Details - ❌ **continuous-integration/travis-ci/push:** The Travis CI build failed ([Details](https://travis-ci.org/datproject/dat/builds/622286667?utm_source=github_status&utm_medium=notification)). --- Commits

The new version differs by 6 commits.

• 72a919d Release 4.4.1
• 7af8d04 adopt new version of 'resolve' dependency
• 718d974 fixes for globby. test fixes. bump pkg-fetch
• 89a1a49 update dependencies
• 7ff6430 test: test-50-bakery-4 for baking non-v8 options
• 061a977 tolerate underscore in bakes excluded from fabricator

See the full diff

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