fix: Encoding Firebase push notification keys #728

Job	Run time
windows	2m 26s
test (platform=iOS\ Simulator,OS=18.2,name=iPhone\ 16\ Pro\ Max, test)	5m 18s
linux	2m 18s
test (platform\=tvOS\ Simulator,OS=18.2,name\=Apple\ TV, test)	4m 8s
spm-test	3m 56s
test (platform=watchOS\ Simulator,name=Apple\ Watch\ Series\ 10\ \(42mm\), build)	1m 24s
test (platform=macOS, test)	4m 39s
test (platform=visionOS\ Simulator,OS=2.2,name=Apple\ Vision\ Pro, build)	1m 16s
docs	1m 5s
cocoapods	4m 22s
xcode-test-5_7	51s
	31m 43s

Provide feedback