[Snyk] Upgrade unified from 9.2.2 to 10.1.1

Snyk has created this PR to upgrade unified from 9.2.2 to 10.1.1.

merge advice :information_source: Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.

Warning: This is a major version upgrade, and may be a breaking change.

The recommended version is 5 versions ahead of your current version.
The recommended version was released 2 months ago, on 2021-11-18.

Release notes

Package name: unified

10.1.1 - 2021-11-18
- 6b060c2 Fix type of run signature
  by @ alvinleung1996 in #174
Full Changelog: 10.1.0...10.1.1
10.1.0 - 2021-07-30
- 134ecad Add plugin input/output type parameters
10.0.1 - 2021-07-21
- 591b0c0 Fix types to support void async transformers
10.0.0 - 2021-07-15
Breaking
- dc46bc5 Use ESM and update vfile
  - Change:
```
// from cjs import
var unified = require('unified')

// to esm import
import {unified} from 'unified'
```
    Learn more about ESM in this guide
  - Breaking: this updates vfile, which importantly renames ~~vfile.contents~~ to vfile.value. See vfile@5
  - Inconsequential: this updates trough, which removes support for Promise-like objects returned from plugins, in favor of only support actual promises. To update, instead of returning an object with a then function, return and actual promise
Types
- b3e2464 Rewrite types
  - Removed the type parameter P for processor settings
  - Use any[] instead of [Record<string, unknown>?] for the default plugin type parameters
- 45eb72e Update types for ESM
- 2c7ba99 8eda349 Add explicit dependency on @ types/unist
- 0e8f611 Remove typescript@3 legacy support
- 350ed9d Fix next in types of transformer signature
- b22bf8e Add support for buffer, other return values
- 4bfd6c8 b8fe5ec 6ef3933 Add support for boolean plugin options
Project
- 88374fc Add esast to list of syntax trees
- a6ff3c1 Fix links
- ee6ee47 Update examples in readme.md
- 32abf7c 60de570 115898a Refactor code style
10.0.0-beta.1 - 2021-07-06
Breaking
- dc46bc5 Use ESM and update vfile
  - Breaking: this updates vfile, which importantly renames ~~vfile.contents~~ to vfile.value. See vfile@5
  - Inconsequential: this updates trough, which removes support for Promise-like objects returned from plugins, in favor of only support actual promises. To update, instead of returning an object with a then function, return and actual promise
Types
- 45eb72e Update types for ESM
- 2c7ba99 8eda349 Add explicit dependency on @ types/unist
- 0e8f611 Remove typescript@3 legacy support
- b22bf8e Add support for buffer, other return values
- 4bfd6c8 Add support for boolean plugin options
Project
- 88374fc Add esast to list of syntax trees
- a6ff3c1 Fix links
- ee6ee47 Update examples in readme.md
- 32abf7c 60de570 115898a Refactor code style
(this should be what will go in v10)
9.2.2 - 2021-07-01
- bc50a01 Fix to set vfile.value if a vfile@5 is given