chore: pin to delta-kernel 0.6.0 for now #8141

Job	Run time
Python Build (Python 3.10 PyArrow latest)	7m 53s
lint	3m 28s
Running with Python 3.9	16m 25s
Running with Python 3.10	16m 34s
Running with Python 3.11	15m 58s
Python Build (Python 3.10 LakeFS Integration tests)	6m 25s
Python Build (Python 3.9 PyArrow 16.0.0)	15m 51s
Running with Python 3.12	15m 51s
PySpark Integration Tests	7m 8s
	1h 45m 33s

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