Add git repository info to package.json

[benmccann]

The other packages had it already, but these were missing it

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: c440f74161ff0383c94289867b1fee133d1a06b5

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 5 packages

| Name | Type | | -------------------------------- | ----- | | @manypkg/gatsby-source-workspace | Patch | | @manypkg/get-packages | Patch | | @manypkg/find-root | Patch | | @manypkg/tools | Patch | | test-gatsby-thing | Patch |

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[Andarist]

If u'd like to get it published u should also add some changesets files with the description of the change

[benmccann]

done. thank you!