Bump firebase-bom from 30.5.0 to 31.0.0

[dependabot[bot]]

Bumps firebase-bom from 30.5.0 to 31.0.0.

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[codeclimate[bot]]

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[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

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[dependabot[bot]]

Superseded by #412.