Expand operating system support to macos-latest

[xeho91]

Currently the warning appears in the workflow annotations.

Warning

The operating system you're using is not supported and results may be varied. Please refer to the documentation for more details.

Source: https://github.com/xeho91/xeho91/actions/runs/9707750464

It works without problems AFAIK in my workflow setup: https://github.com/xeho91/xeho91/blob/main/.github/workflows/typedoc.yml#L29-L74

I'm willing to make a PR. But I'd like to verify first if there's any possible cases where macos-latest would not work correctly.