Update dependency @types/webpack-sources1 to v0.1.9 (#66)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [@types/webpack-sources1](https://togithub.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/webpack-sources) ([source](https://togithub.com/DefinitelyTyped/DefinitelyTyped)) | [`0.1.5` -> `0.1.9`](https://renovatebot.com/diffs/npm/@types%2fwebpack-sources1/0.1.5/0.1.9) | [![age](https://developer.mend.io/api/mc/badges/age/npm/@types%2fwebpack-sources1/0.1.9?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/@types%2fwebpack-sources1/0.1.9?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/@types%2fwebpack-sources1/0.1.5/0.1.9?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@types%2fwebpack-sources1/0.1.5/0.1.9?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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Author: renovate[bot]

packages/next/package.json

@@ -188,7 +188,7 @@
     "@types/text-table": "0.2.3",
     "@types/ua-parser-js": "0.7.36",
     "@types/uuid": "8.3.4",
-    "@types/webpack-sources1": "npm:@types/[email protected].5",
+    "@types/webpack-sources1": "npm:@types/[email protected].9",
     "@types/ws": "8.2.0",
     "@vercel/ncc": "0.34.0",
     "@vercel/nft": "0.22.6",