Update this to work with latest hugo - address warnings generated

[richarddushime]

Describe the bug
I encountered issues running the project after installing the latest Hugo versions (v0.137.0 and v0.139.0). The project fails to build, throwing errors.

To Reproduce

1. Install the latest Hugo version (v0.137.0 or v0.139.0).
2. Clone the project repository.
3. Run the project using hugo server.

Expected Outcome
The project should start successfully without errors.

Actual Behavior
Errors are thrown, and the project fails to start.

Suggested Workaround
For new users experiencing this issue, consider installing Hugo v0.130.0 or below while an update to support the latest Hugo versions is being planned.

[LukasWallrich]

In our automated deploy, we have fixed HUGO_VERSION: "0.123.3", so that won't break - but obviously it would be good to be able to update that at some point. Thanks for looking into this!

[richarddushime]

maybe this should be added in the CONTRIBUTING.md ?

[github-actions]

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[richarddushime]

warnings fix

WARN deprecated: .Site.GoogleAnalytics was deprecated in Hugo v0.120.0 and will be removed in a future release. Use .Site.Config.Services.GoogleAnalytics.ID instead.
WARN deprecated: .Site.IsMultiLingual was deprecated in Hugo v0.124.0 and will be removed in a future release. Use hugo.IsMultilingual instead.