tests

Use XCode 16.4 to fix pod lint #759

Job	Run time
Build XCFramework	9m 47s
Rust unit tests on macos-latest	1m 32s
Rust unit tests on ubuntu-24.04	2m 36s
Basic WASM build	2m 15s
Building Android libraries	3m 30s
Building macOS libraries	1m 24s
Building Linux libraries	4m 29s
Building Windows libraries	2m 49s
Testing with Valgrind on ubuntu-latest	2m 56s
Testing on windows-11-arm	1m 18s
Testing on ubuntu-24.04	1m 20s
Testing on windows-latest	1m 19s
Testing on ubuntu-arm64	1m 21s
Testing on macos-latest	44s
	37m 20s

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