update firebase@4 to 5 to support win+node 10

[amitport]

Root package.json uses firebase@4 which transitively uses grpc@1.10.1 which fails to build on win+node 10. firebase@5 does not have this issue.

See also:
grpc/grpc#15403
#10401

[crisbeto]

The current setup works on Windows and Node 8. I don't think we can bump to None 9 or 10 since Angular core is set to Node >=8.9.1 <9.0.0.

[amitport]

@crisbeto. OK. I've reverted to Node 8 LTS. In any case, in practice, only firebase@4 dependencies block the development of Material with Node@10. (I've manually overridden package-lock to require grpc@1.12.2 and it works fine)

[jelbourn]

Closing this since it only affects node 10 which we haven't switched to yet.

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}