Updates needed while building notebooks

[coveralls]

Pull Request Test Coverage Report for Build 1565384524

• 4 of 7 (57.14%) changed or added relevant lines in 3 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.04%) to 85.889%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
mlir_graphblas/algorithms.py	2	3	66.67%
mlir_graphblas/mlir_builder.py	0	2	0.0%
<!--	Total:	4	7	57.14%	-->

Totals
Change from base Build 1564765583:	-0.04%
Covered Lines:	4559
Relevant Lines:	5308

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💛 - Coveralls