Hugo improvements

[jimangel]

This PR was created to address the performance of Hugo. I would love to have a few folks check full functionality.

By setting params.ui.sidebar_cache_limit to 1, the build time went from 1m30s to 15s locally and 5m45s to 45s in Netlify!!! (details)

While I was making tweaks, I wanted to remove the WARNING: calling IsSet with unsupported type "invalid" (<nil>) will always return false. Fixed via docsy, so I upgraded the module in the second commit following my old instructions.

Lastly, I tested this on the latest build of Hugo and updated netlify.toml to match.

Potentially fixes: #29429

Site preview: https://deploy-preview-29504--kubernetes-io-main-staging.netlify.app

[jimangel]

Old build (current published one on main):

12:18:54 PM: (build.command completed in 5m 45.7s)

This build:

3:11:23 PM: (build.command completed in 46.7s)

[netlify]

✔️ Deploy Preview for kubernetes-io-main-staging ready!

🔨 Explore the source changes: e01f70d

🔍 Inspect the deploy log: https://app.netlify.com/sites/kubernetes-io-main-staging/deploys/6122af1366766a0007b04f9f

😎 Browse the preview: https://deploy-preview-29504--kubernetes-io-main-staging.netlify.app

[zacharysarah]

Wow, that’s amazing! 🤩 Thanks for finding a solution, @jimangel!

/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: d40d479abb78d6ce6d24836d0a1f30e30c2ad2df

[sftim]

/approve
/hold

in case further testing is wanted

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: sftim

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[sftim]

anyone: feel free to unhold

[jimangel]

Let it rip! 🚀
/unhold
/woof
Thanks @sftim!

[k8s-ci-robot]

@jimangel:

In response to this:

Let it rip! 🚀
/unhold
/woof
Thanks @sftim!

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