bench: refactor to use dynamic memory allocation in 'blas/base/csrot'

[ishwarthecodddr]

Resolves #8643

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[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
blas/base/ccopy	$\color{green}394/394$ $\color{green}+100.00%$	$\color{green}17/17$ $\color{green}+100.00%$	$\color{green}4/4$ $\color{green}+100.00%$	$\color{green}394/394$ $\color{green}+100.00%$
blas/base/csrot	$\color{green}418/418$ $\color{green}+100.00%$	$\color{green}17/17$ $\color{green}+100.00%$	$\color{green}4/4$ $\color{green}+100.00%$	$\color{green}418/418$ $\color{green}+100.00%$

The above coverage report was generated for the changes in this PR.

[stdlib-bot]

⚠️ Tracking Issue Closure Warning ⚠️

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Why this matters:
Tracking issues should typically remain open until all related sub-issues are completed. GitHub automatically closes issues with such closing keywords when the PR is merged. For more information, see GitHub's documentation on using keywords in issues and pull requests.

Required action:
Use "Progresses" instead to reference the tracking issue without automatically closing it.

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[Neerajpathak07]

@ishwarthecodddr update the PR tittle with:-
bench: refactor to use dynamic memory allocation in blas/base/csrot
add backtick( ` ) before and after the package name.