Bump uniffi from 0.31.0 to 0.31.1 in /common #2629

Job	Run time
format-lint	7s
build-ferrostar	3m 59s
build-demo (iOS Demo)	1m 31s
test (FerrostarCore-Package, platform=iOS Simulator,name=iPhone 17 Pro,OS=26.2)	4m 12s
	9m 49s

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