fix(starters): update dependency gatsby to ^2.0.116 (#11596)

This PR contains the following updates:

| Package | Type | Update | Change | References |
|---|---|---|---|---|
| gatsby | dependencies | patch | `^2.0.115` -> `^2.0.116` | [source](https://togithub.com/gatsbyjs/gatsby) |

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### Release Notes

<details>
<summary>gatsbyjs/gatsby</summary>

### [`v2.0.116`](https://togithub.com/gatsbyjs/gatsby/compare/gatsby@2.0.115...gatsby@2.0.116)

[Compare Source](https://togithub.com/gatsbyjs/gatsby/compare/gatsby@2.0.115...gatsby@2.0.116)

</details>

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