[TS] tsc build is failing in ckeditor-cloud-services-collaboration

[Witoso]

📝 Provide detailed reproduction steps (if any)

1. Clone the repo https://github.com/ckeditor/js-nation-workshop
2. cd meta/bonus
3. Install deps.
4. Remove skipLibCheck from the tsconfig.
5. Run npx tsc.

✔️ Expected result

Project builds.

❌ Actual result

Errors, multiple ones from CCSC:

import CommentsService from '@ckeditor/ckeditor-cloud-services-collaboration/src/comments-v2/commentsservice';
                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

node_modules/@ckeditor/ckeditor5-real-time-collaboration/src/realtimecollaborativeediting/realtimecollaborationclient.d.ts:7:41 - error TS7016: Could not find a declaration file for module '@ckeditor/ckeditor-cloud-services-collaboration/src/collaborativeeditingservice/collaborativeeditingservice'. '/Users/witold/workspace/cksource/js-nation-workshop/meta/bonus/node_modules/@ckeditor/ckeditor-cloud-services-collaboration/src/collaborativeeditingservice/collaborativeeditingservice.js' implicitly has an 'any' type.
  Try `npm i --save-dev @types/ckeditor__ckeditor-cloud-services-collaboration` if it exists or add a new declaration (.d.ts) file containing `declare module '@ckeditor/ckeditor-cloud-services-collaboration/src/collaborativeeditingservice/collaborativeeditingservice';`

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