build: Allow swift-syntax 6.2.0 (#474) #1836

Job	Run time
check-bridgejs-generated	5m 41s
Build for native target (macos-15, Xcode_16.4)	53s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.0.2-release/ubuntu2204/swift-6.0...	4m 34s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	5m 46s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	6m 25s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	5m 28s
build-examples	11m 39s
format	36s
deploy-examples	11s
	41m 13s

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