fix: mark prettier as a required import to fix an import error

[wolfy1339]

node:internal/modules/cjs/loader:942
  throw err;
  ^

Error: Cannot find module 'prettier'
Require stack:
- /home/user/.npm/_npx/b52e3113e4f00614/node_modules/create-octokit-project/lib/write-pretty-file.js
- /home/user/.npm/_npx/b52e3113e4f00614/node_modules/create-octokit-project/lib/create-coc.js
- /home/user/.npm/_npx/b52e3113e4f00614/node_modules/create-octokit-project/index.js
- /home/user/.npm/_npx/b52e3113e4f00614/node_modules/create-octokit-project/bin/create-octokit-project.js
    at Module._resolveFilename (node:internal/modules/cjs/loader:939:15)
    at Module._load (node:internal/modules/cjs/loader:780:27)
    at Module.require (node:internal/modules/cjs/loader:1005:19)
    at require (node:internal/modules/cjs/helpers:102:18)
    at Object.<anonymous> (/home/user/.npm/_npx/b52e3113e4f00614/node_modules/create-octokit-project/lib/write-pretty-file.js:6:17)
    at Module._compile (node:internal/modules/cjs/loader:1105:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1159:10)
    at Module.load (node:internal/modules/cjs/loader:981:32)
    at Module._load (node:internal/modules/cjs/loader:827:12)
    at Module.require (node:internal/modules/cjs/loader:1005:19) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/home/user/.npm/_npx/b52e3113e4f00614/node_modules/create-octokit-project/lib/write-pretty-file.js',
    '/home/user/.npm/_npx/b52e3113e4f00614/node_modules/create-octokit-project/lib/create-coc.js',
    '/home/user/.npm/_npx/b52e3113e4f00614/node_modules/create-octokit-project/index.js',
    '/home/user/.npm/_npx/b52e3113e4f00614/node_modules/create-octokit-project/bin/create-octokit-project.js'
  ]
}

Node.js v18.0.0
npm ERR! code 1
npm ERR! path /home/user
npm ERR! command failed
npm ERR! command sh -c create-octokit-project

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/user/.npm/_logs/2022-10-25T21_39_02_465Z-debug-0.log

[kfcampbell]

Ahh, I didn't realize that lib/write-pretty-file.js existed! Nice catch.

[github-actions]

🎉 This PR is included in version 2.3.2 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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