[Simple Metronome] Flutter upgrades & Rust bridge upgrade to v2 #30

Job	Run time
web / Build legacy JavaScript apps	20s
dart / Metronome - Dart - Build & test	3m 0s
rust / Build rust crates on macos-14	2m 20s
rust / Lint rust crates on ubuntu-20.04	3m 3s
rust / Build rust crates on ubuntu-20.04	3m 10s
rust / Build release rust binaries macos-14	2m 20s
rust / Build release rust binaries ubuntu-20.04	6m 35s
rust / Test rust crates on macos-14	15m 23s
rust / Test rust crates on ubuntu-20.04	3m 39s
rust / Validate licenses on macos-14	3m 10s
	43m 0s

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