Remove version specifier from brew swig logic

[a-maurice]

Description

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

The brew install logic is failing to find the specified swig version. Use the latest stable instead.

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Testing

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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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