npm warn deprecated inflight@1.0.6: This module is not supported, and leaks memory. Do not use it.

There is a bunch of warnings for deprecated dependencies:

```
npm warn deprecated rimraf@2.6.3: Rimraf versions prior to v4 are no longer supported
npm warn deprecated inflight@1.0.6: This module is not supported, and leaks memory. Do not use it. Check out lru-cache if you want a good and tested way to coalesce async requests by a key value, which is much more comprehensive and powerful.
npm warn deprecated glob@7.2.3: Glob versions prior to v9 are no longer supported
npm warn deprecated opn@6.0.0: The package has been renamed to `open`
```

Seeing the warnings and spotting the last release being 2020, it's a little worrying for new adopters, particularly if there were a vulnerability in a package. Is BackstopJS still activity maintained? It looks good so I'm hoping it is!