Update firebase dependency to 9.0.0 beta.8

[justjish]

Description

Updated to support firebase 9.0.0-beta.8.
Updated/Fixed tests, which were failing due to new method for connecting to emulators.

Code sample

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[jhuleatt]

Thank you @sujishpatel, this is a huge help! If you're able to sign the CLA, we can run the tests and then get this merged.

[justjish]

Odd. CLA is signed on my end. The error points to something.

[jhuleatt]

Double checked the CLA report and it looks good to me. Merging.