Update dependency alex to v11 (#297)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [alex](https://alexjs.com) ([source](https://togithub.com/get-alex/alex)) | [`9.1.1` -> `11.0.1`](https://renovatebot.com/diffs/npm/alex/9.1.1/11.0.1) | [![age](https://developer.mend.io/api/mc/badges/age/npm/alex/11.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/alex/11.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/alex/9.1.1/11.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/alex/9.1.1/11.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>get-alex/alex (alex)</summary>

### [`v11.0.1`](https://togithub.com/get-alex/alex/releases/tag/11.0.1)

[Compare Source](https://togithub.com/get-alex/alex/compare/11.0.0...11.0.1)

-   [`c1779a5`](https://togithub.com/get-alex/alex/commit/c1779a5) Add `main` field to `package.json`
    by [@&#8203;kanadgupta](https://togithub.com/kanadgupta) in [get-alex/alex#342

**Full Changelog**: get-alex/alex@11.0.0...11.0.1

### [`v11.0.0`](https://togithub.com/get-alex/alex/releases/tag/11.0.0)

[Compare Source](https://togithub.com/get-alex/alex/compare/10.0.0...11.0.0)

-   [`1b4c1be`](https://togithub.com/get-alex/alex/commit/1b4c1be) Update `retext-equality`, `retext-profanities`
-   [`3b55031`](https://togithub.com/get-alex/alex/commit/3b55031) Remove support for Node 12

**Full Changelog**: get-alex/alex@10.0.0...11.0.0

### [`v10.0.0`](https://togithub.com/get-alex/alex/releases/tag/10.0.0)

[Compare Source](https://togithub.com/get-alex/alex/compare/9.1.1...10.0.0)

-   [`d2cd488`](https://togithub.com/get-alex/alex/commit/d2cd488) Use ESM
    affects you if you use the API. [Please read this](https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c)
-   [`d4833f8`](https://togithub.com/get-alex/alex/commit/d4833f8) Add JSDoc based types
-   [`86e9c9f`](https://togithub.com/get-alex/alex/commit/86e9c9f) Remove browser build

**Full Changelog**: get-alex/alex@9.1.1...10.0.0

</details>

---

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package.json

@@ -108,7 +108,7 @@
     "@vercel/og": "0.5.17",
     "@zeit/next-typescript": "1.1.2-canary.0",
     "abort-controller": "3.0.0",
-    "alex": "9.1.1",
+    "alex": "11.0.1",
     "amphtml-validator": "1.0.35",
     "ansi-escapes": "4.3.2",
     "async-sema": "3.1.1",