Install CMake 3.31.x on runners to override new GitHub default of CMake 4.

[jonsimantov]

Description

Provide details of the change, and generalize the change in the PR title above.

Change CMake to an explicit version to avoid incompatibility with new GitHub default version CMake 4.

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Testing

Describe how you've tested these changes.

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Type of Change

Place an x the applicable box:

• Bug fix. Add the issue # below if applicable.
• New feature. A non-breaking change which adds functionality.
• Other, such as a build process or documentation change.

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[gemini-code-assist]

Hello @jonsimantov, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

Summary of Changes

This pull request adds CMake installation steps to the GitHub Actions workflows. Based on the title, the author suspects that the added steps might be more than strictly necessary. Since no specific files were changed, it appears the changes are limited to the workflow configurations.

Highlights

• CMake Installation: The pull request introduces CMake installation steps within the GitHub Actions workflows.
• Workflow Enhancement: The goal is to likely ensure CMake is available for building and testing the project.

Changelog

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A build tool's grace,
CMake finds its rightful place,
In workflows it thrives.

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[gemini-code-assist]

Code Review

The pull request adds CMake installation to the workflows. The changes seem straightforward, but I have a few suggestions to improve the workflow definitions.

Merge Readiness

The changes seem reasonable and straightforward. I would recommend addressing the comments before merging. I am unable to directly approve the pull request, and users should have others review and approve this code before merging.