[FLINK-35109] Update version to 3.4-SNAPSHOT #722

Job	Run time
python_test (1.19.1) / python_test (8)	15m 4s
python_test (1.19.1) / python_test (8)	4m 34s
python_test (1.20.0) / python_test (8)	17m 4s
python_test (1.20.0) / python_test (8)	4m 22s
compile_and_test (1.20.0, 8, 11, 17, 21) / compile_and_test (8)	13m 5s
compile_and_test (1.20.0, 8, 11, 17, 21) / compile_and_test (8)	33m 30s
compile_and_test (1.19.1, 8, 11, 17, 21) / compile_and_test (8)	13m 39s
compile_and_test (1.19.1, 8, 11, 17, 21) / compile_and_test (8)	35m 38s
compile_and_test (1.20.0, 8, 11, 17, 21) / compile_and_test (11)	13m 22s
compile_and_test (1.20.0, 8, 11, 17, 21) / compile_and_test (11)	34m 36s
compile_and_test (1.19.1, 8, 11, 17, 21) / compile_and_test (11)	13m 40s
compile_and_test (1.19.1, 8, 11, 17, 21) / compile_and_test (11)	32m 14s
compile_and_test (1.20.0, 8, 11, 17, 21) / compile_and_test (17)	13m 22s
compile_and_test (1.20.0, 8, 11, 17, 21) / compile_and_test (17)	31m 56s
compile_and_test (1.19.1, 8, 11, 17, 21) / compile_and_test (17)	13m 39s
compile_and_test (1.19.1, 8, 11, 17, 21) / compile_and_test (17)	31m 6s
compile_and_test (1.20.0, 8, 11, 17, 21) / compile_and_test (21)	13m 22s
compile_and_test (1.20.0, 8, 11, 17, 21) / compile_and_test (21)	32m 15s
compile_and_test (1.19.1, 8, 11, 17, 21) / compile_and_test (21)	13m 41s
compile_and_test (1.19.1, 8, 11, 17, 21) / compile_and_test (21)	31m 1s
	6h 51m 10s

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