build(deps): bump commitlint toolset to 20.4.2

bumped versions:

```
@commitlint/cli from 20.4.1 to 20.4.2
@commitlint/config-conventional from 20.4.1 to 20.4.2
@commitlint/lint from 20.0.0 to 20.4.2
@commitlint/load from 20.1.0 to 20.4.0
```

Author: nord-erik