build(deps-dev): bump @types/node-fetch from 2.5.11 to 2.5.12 (#2766)

Bumps [@types/node-fetch](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node-fetch) from 2.5.11 to 2.5.12.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node-fetch)

---
updated-dependencies:
- dependency-name: "@types/node-fetch"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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