Update to BOB 2.2.1

BOB version 2.2.1 was released May 24, but interactive-examples repo still uses 2.2.0. I can see that NPM & YARN are also considering 2.2.0 as newest version, so probably it wasn't published correctly. @schalkneethling Could you please try to fix it? It would be great to have #759 applied finally.

👋 Thanks for opening your first issue here! If you're reporting a 🐞 bug, please make sure you include steps to reproduce it.

2.2.0 is installed now https://github.com/mdn/interactive-examples/blob/0449b71c11ed96fd3144b426f4e1243f8ba90e5d/package.json#L43

Yes, but ^ allows minor and patch updates to a given version, so 2.2.1 should be recognized.