chore: Update go mod to theme v2 (#1424)

[haywoodsh]

(cherry picked from commit a9d8548)

Proposed changes

Checklist

Before sharing this pull request, I completed the following checklist:

• I read the Contributing guidelines
• My branch adheres to the Git conventions
• My content changes adhere to the F5 NGINX Documentation style guide
• If my changes involve potentially sensitive information¹, I have assessed the possible impact
• I have waited to ensure my changes pass tests, and addressed any discovered issues

Footnotes

1. Potentially sensitive information includes personally identify information (PII), authentication credentials, and live URLs. Refer to the style guide for guidance about placeholder content. ↩

[github-actions]

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[ADubhlaoich]

Approved, but might be unnecessary.

I plan to reconcile the release branch with main if nobody else has prior to release.

[ADubhlaoich]

Yeah, since I reconciled main there's nothing to address in the PR.

Closing it as a result!