fix(starters): update gatsby monorepo (#11621)

This PR contains the following updates:

| Package | Type | Update | Change | References |
|---|---|---|---|---|
| gatsby | dependencies | patch | `^2.0.116` -> `^2.0.117` | [source](https://togithub.com/gatsbyjs/gatsby) |
| gatsby-plugin-offline | dependencies | patch | `^2.0.22` -> `^2.0.23` | [source](https://togithub.com/gatsbyjs/gatsby) |

---

### Release Notes

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

### [`v2.0.117`](https://togithub.com/gatsbyjs/gatsby/compare/gatsby@2.0.116...gatsby@2.0.117)

[Compare Source](https://togithub.com/gatsbyjs/gatsby/compare/gatsby@2.0.116...gatsby@2.0.117)

</details>

---

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---

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starters/blog/package.json

@@ -8,12 +8,12 @@
     "url": "https://github.com/gatsbyjs/gatsby/issues"
   },
   "dependencies": {
-    "gatsby": "^2.0.116",
+    "gatsby": "^2.0.117",
     "gatsby-image": "^2.0.29",
     "gatsby-plugin-feed": "^2.0.13",
     "gatsby-plugin-google-analytics": "^2.0.13",
     "gatsby-plugin-manifest": "^2.0.17",
-    "gatsby-plugin-offline": "^2.0.22",
+    "gatsby-plugin-offline": "^2.0.23",
     "gatsby-plugin-react-helmet": "^3.0.6",
     "gatsby-plugin-sharp": "^2.0.20",
     "gatsby-plugin-typography": "^2.2.7",

starters/default/package.json

@@ -5,10 +5,10 @@
   "version": "0.1.0",
   "author": "Kyle Mathews <mathews.kyle@gmail.com>",
   "dependencies": {
-    "gatsby": "^2.0.116",
+    "gatsby": "^2.0.117",
     "gatsby-image": "^2.0.29",
     "gatsby-plugin-manifest": "^2.0.17",
-    "gatsby-plugin-offline": "^2.0.22",
+    "gatsby-plugin-offline": "^2.0.23",
     "gatsby-plugin-react-helmet": "^3.0.6",
     "gatsby-plugin-sharp": "^2.0.20",
     "gatsby-source-filesystem": "^2.0.20",