Update dependency @types/content-type to v1.1.7 (#451)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [@types/content-type](https://togithub.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/content-type) ([source](https://togithub.com/DefinitelyTyped/DefinitelyTyped)) | [`1.1.6` -> `1.1.7`](https://renovatebot.com/diffs/npm/@types%2fcontent-type/1.1.6/1.1.7) | [![age](https://developer.mend.io/api/mc/badges/age/npm/@types%2fcontent-type/1.1.7?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/@types%2fcontent-type/1.1.7?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/@types%2fcontent-type/1.1.6/1.1.7?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@types%2fcontent-type/1.1.6/1.1.7?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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packages/next/package.json

@@ -164,7 +164,7 @@
     "@types/ci-info": "2.0.0",
     "@types/compression": "1.7.4",
     "@types/content-disposition": "0.5.7",
-    "@types/content-type": "1.1.6",
+    "@types/content-type": "1.1.7",
     "@types/cookie": "0.5.2",
     "@types/cross-spawn": "6.0.3",
     "@types/debug": "4.1.9",