chore: Updates version to 1.2.9 #4283

Job	Run time
apple (macos-14, Xcode_15.2, platform=iOS Simulator,OS=17.2,name=iPhone 15)	7m 52s
apple (macos-14, Xcode_15.2, platform=tvOS Simulator,OS=17.2,name=Apple TV 4K (3rd generation) (a...	8m 28s
apple (macos-14, Xcode_15.2, platform=visionOS Simulator,OS=1.0,name=Apple Vision Pro)	10m 22s
apple (macos-14, Xcode_15.2, platform=macOS)	11m 13s
apple (macos-15, Xcode_16.1, platform=iOS Simulator,OS=18.1,name=iPhone 16)	11m 47s
apple (macos-15, Xcode_16.1, platform=tvOS Simulator,OS=18.1,name=Apple TV 4K (3rd generation) (a...	7m 45s
apple (macos-15, Xcode_16.1, platform=visionOS Simulator,OS=2.1,name=Apple Vision Pro)	8m 10s
apple (macos-15, Xcode_16.1, platform=macOS)	10m 21s
linux (jammy, 5.9)	10m 13s
linux (jammy, 6.0)	9m 50s
	1h 36m 1s

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