Refreshed article as of pwsh 7.4.2 on linux and macos

[mikefrobbins]

PR Summary

Refreshed article as of pwsh 7.4.2 on linux and macos

PR Checklist

• [x] Descriptive Title: This PR's title is a synopsis of the changes it proposes.
• [x] Summary: This PR's summary describes the scope and intent of the change.
• [x] Contributor's Guide: I have read the contributors guide.
• [x] Style: This PR adheres to the style guide.

[learn-build-service-prod[bot]]

Learn Build status updates of commit 5f68c3b:

:white_check_mark: Validation status: passed

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reference/docs-conceptual/whats-new/unix-support.md	:white_check_mark:Succeeded	View (>=powershell-5.1)

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[learn-build-service-prod[bot]]

Learn Build status updates of commit bc9538d:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
reference/docs-conceptual/whats-new/unix-support.md	:white_check_mark:Succeeded	View (>=powershell-5.1)

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[learn-build-service-prod[bot]]

Learn Build status updates of commit 69590b9:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
reference/docs-conceptual/whats-new/unix-support.md	:white_check_mark:Succeeded	View (>=powershell-5.1)

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[learn-build-service-prod[bot]]

Learn Build status updates of commit e7121b1:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
reference/docs-conceptual/whats-new/unix-support.md	:white_check_mark:Succeeded	View (>=powershell-5.1)

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[learn-build-service-prod[bot]]

Learn Build status updates of commit 47d1bc1:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
reference/docs-conceptual/whats-new/unix-support.md	:white_check_mark:Succeeded	View (>=powershell-5.1)

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel