Fix: Update VPN client version to 2.8.100

[losbjordal]

The October 2025 version is 2.8.100.

[prmerger-automator[bot]]

@losbjordal : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change.

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

Learn Build status updates of commit bf945a6:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
includes/vpn-gateway-azure-vpn-client-macos-table.md	:white_check_mark:Succeeded

For more details, please refer to the build report.

[ttorble]

@cherylmc

Can you review the proposed changes?

IMPORTANT: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.

#label:"aq-pr-triaged" @MicrosoftDocs/public-repo-pr-review-team

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

Learn Build status updates of commit f9b8f82:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
includes/vpn-gateway-azure-vpn-client-macos-table.md	:white_check_mark:Succeeded

For more details, please refer to the build report.

[losbjordal]

#sign-off

[prmerger-automator[bot]]

Invalid command: '#sign-off'. Only the assigned author of one or more file in this PR can sign off. @cherylmc

[v-dirichards]

Hi @losbjordal - Thanks for your review. In the public repo, pull requests should be signed off by the author, another member of the content team, or a PM.

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@cherylmc Could you take a look? Thanks!