Hi all -- checks microphone

This is mostly to inform the watchers of this repo, many of whom are likely utilizing this repository via git subtrees or git submodules, that the default branch name has changed (from master to main, in accordance though slightly behind what many other repositories have done).

Sorry for any inconvenience this causes, though hopefully it's a simple matter to update your use of the repository.

If you're using git subtree, you should just be able to change to:

git subtree pull --squash --prefix path/to/the/subtree/ https://github.com/json-schema-org/JSON-Schema-Test-Suite main

and if you're using git submodule some instructions are here.

(If you all have suggestions for better ways to communicate changes, they are also welcome!)

-J