Fix issues with outdated package-lock.json file.

[taeold]

Our package-lock.json file is outdated and our dependencies are a bit jumbled up.

I didn't notice any issue when using nodejs14 but when using nodejs16 reveals several issues that I've tried to address in the PR:

1. Update typedoc dependency to avoid impossible dep resolution (first reported Update typedoc from 0.21.2 to ^0.23.7. #1169)

2. Regenerate package-lock.json. Looks like it's "behind" package.json. I took this opportunity to use lockfileVersion: 2 which is the default if you use nodejs16

3. Using firebase-admin v10.3.0 broke some unit test we had. Fixed in 2ee9549.

[kaibolay]

Thanks!