docs: docsy and hugo update to latest version

[csviri]

The main reason for this facelift is that we are able to run it locally with latest hugo.

Signed-off-by: Attila Mészáros a_meszaros@apple.com

[Copilot]

Pull request overview

Updates the documentation site’s Hugo/Docsy stack to newer versions and removes now-unneeded local theme overrides, aligning CI and site configuration with the newer Hugo minimum.

Changes:

• Bump Docsy Hugo module dependency to v0.14.2 and raise the minimum Hugo version to 0.139.0.
• Update the GitHub Pages workflow to build with Hugo 0.148.0.
• Remove Docsy override templates (Mermaid script loader and heading render hook wrapper) and adjust project SCSS theme overrides.

Reviewed changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
docs/layouts/partials/scripts/mermaid.html	Removes a previously-custom Mermaid loader override.
docs/layouts/_default/_markup/render-heading.html	Removes a wrapper render hook template override.
docs/hugo.toml	Raises required Hugo minimum version for Hugo Modules.
docs/go.mod	Updates Docsy module dependency version.
docs/go.sum	Updates module checksums for newer Docsy (and related) versions.
docs/config.yaml	Updates the “version gate” config to require newer Hugo.
docs/assets/scss/_variables_project.scss	Adds/adjusts theme variable overrides and custom CSS for Docsy 0.14.x.
.github/workflows/hugo.yaml	Updates Hugo version used by the Pages build workflow.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.