* Update typings for mocha
This is includes an update of the lock file to the v2 format. It's a big
change, but not much is happening here. I thought it best to keep it
separate.
* Fix globalSetup/teardown for mocha
Updating the typings for mocha uncovered an error in how we were
registering global setups and teardowns.
When calling `mocha.globalSetup` or `mocha.globalTeardown`, any
previously registered globals are overwritten. The workaround
is to attach globals directly to the internal options object.
This is a requirement because we are now registering globals in
multiple files.
Unfortunately, the typings for mocha do not permit this and I may need
to fix them again.
I have already pushed `main` upstream pointing at the same commit as
master, so this PR should be safe to merge. To the best of my
knowledge all that's necessary after that is to change the
default branch
in https://github.com/github/vscode-codeql/settings/branches.
