bench: refactor to use string interpolation in `lapack/base/dlassq` #20414

Job	Run time
Update copyright header years	0s
Check for required files	0s
Manage labels	0s
Auto-fix lint errors	0s
Remove in-progress label	0s
Merge changes from develop branch into this PR	-8s
Rebase this PR on top of develop branch	-9s
	-17s

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