Use artifact.index column instead of counter #1653

Job	Run time
Go Lint	43s
Go Integration Tests (sqlite)	1m 8s
Build (darwin/amd64)	1m 5s
Go Integration Tests (sqlcipher)	1m 29s
Go Compatibility Tests (Mlflow 1.30.0 - postgres://postgres:postgres@postgres/postgres)	1m 25s
Build (darwin/arm64)	1m 6s
Go Integration Tests (postgres)	1m 33s
Go Compatibility Tests (Mlflow 1.30.0 - sqlite:///db/mlflow.db)	1m 38s
Go Unit Tests	19s
Build (linux/amd64)	1m 4s
Go Compatibility Tests (Mlflow 2.13.0 - postgres://postgres:postgres@postgres/postgres)	1m 43s
Build (linux/arm64)	1m 19s
Go Compatibility Tests (Mlflow 2.13.0 - sqlite:///db/mlflow.db)	1m 48s
Python Integration Tests (aim)	1m 17s
Python Lint	20s
Build (windows/amd64)	1m 0s
Python Integration Tests (mlflow)	2m 11s
Python Integration Tests (fml_client)	1m 56s
All required checks done	0s
Push to GitHub Container Registry	0s
Release	0s
	23m 4s

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