chore(firebase): fix firebase.json #1041

Job	Run time
client (ubuntu-latest)	2m 1s
docs	1m 20s
ngauth (ubuntu-latest)	18s
client (windows-latest)	4m 14s
client (macos-latest)	1m 8s
python-build-package (ubuntu-latest, *, linux)	2m 37s
python-tests (3.9, ubuntu-latest)	6m 39s
python-build-package (windows-latest, *, windows)	6m 47s
python-tests (3.9, windows-latest)	6m 23s
python-build-package (macos-14, *_x86_64, macos_x86_64)	2m 5s
wasm (ubuntu-latest)	1m 0s
python-tests (3.9, macos-latest)	1m 56s
python-build-package (macos-14, *_arm64, macos_arm64)	1m 31s
python-tests (3.12, ubuntu-latest)	5m 16s
python-tests (3.12, windows-latest)	4m 49s
python-tests (3.12, macos-latest)	2m 0s
publish-package	1m 8s
	51m 12s

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