CI: Build examples in parallel on pull requests #2745

Job	Run time
check-bridgejs-generated	3m 31s
format	37s
Test BridgeJS against Swift versions (swift:6.3, 603.0.0)	3m 5s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	9m 7s
prettier	13s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	9m 8s
build-example (OffscrenCanvas)	9m 7s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	9m 7s
build-example (Basic)	9m 7s
build-example (PlayBridgeJS)	9m 6s
build-example (Embedded)	9m 6s
build-example (ActorOnWebWorker)	9m 7s
Build for native target (macos-15, Xcode_26.0.1)	3m 16s
build-example (Multithreading)	9m 7s
build-examples-deploy	0s
deploy-examples	0s
build-examples	1s
	1h 32m 45s

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