chore(helm): update pipeline-backend db version #2141

Job	Run time
console / integration-test-console	8m 30s
backend (model-backend) / integration-test	7m 47s
backend (mgmt-backend) / integration-test	7m 38s
backend (pipeline-backend) / integration-test	7m 40s
backend (artifact-backend) / integration-test	7m 11s
	38m 46s

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