fix(starters): update dependency gatsby to ^2.0.118 (#11653)

This PR contains the following updates:

| Package | Type | Update | Change | References |
|---|---|---|---|---|
| gatsby | dependencies | patch | `^2.0.117` -> `^2.0.118` | [source](https://togithub.com/gatsbyjs/gatsby) |

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### Release Notes

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

### [`v2.0.118`](https://togithub.com/gatsbyjs/gatsby/compare/gatsby@2.0.117...gatsby@2.0.118)

[Compare Source](https://togithub.com/gatsbyjs/gatsby/compare/gatsby@2.0.117...gatsby@2.0.118)

</details>

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package.json

@@ -12,7 +12,7 @@
     "test": "echo \"Write tests! -> https://gatsby.app/unit-testing\""
   },
   "dependencies": {
-    "gatsby": "^2.0.117",
+    "gatsby": "^2.0.118",
     "react": "^16.8.0",
     "react-dom": "^16.8.0"
   },