Bump atob from 2.0.3 to 2.1.2

Bumps [atob](https://github.com/coolaj86/node-browser-compat) from 2.0.3 to 2.1.2.
- [Release notes](https://github.com/coolaj86/node-browser-compat/releases)
- [Commits](https://github.com/coolaj86/node-browser-compat/commits)

---
updated-dependencies:
- dependency-name: atob
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]