Add basic Electron tests and pump its version for demos #217

Job	Run time
build-and-test / build (24.X, x64, kilted)	8m 41s
build-and-test / build (24.X, x64, rolling)	14m 12s
build-and-test / build (25.X, x64, humble)	7m 35s
build-and-test / build (25.X, x64, jazzy)	8m 23s
build-and-test / build (24.X, x64, humble)	6m 23s
build-and-test / build (25.X, x64, kilted)	8m 38s
build-and-test / build (25.X, x64, rolling)	14m 27s
build-and-test / build (24.X, x64, jazzy)	8m 16s
	1h 16m 35s

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