Update supported CPU/GPU targets for 2025.06

[bedroge]

CPU overview:

GPU overview:

Not completely happy with this one yet. Already disabled the TOC to get more space, but there's quite a lot of information in the table. Maybe we should shorten the CPU names here or stick to the same ones as on the CPU page (i.e. x86_64/amd/zen5 instead of having different columns)?

But, anyway, I'd say it's already an improvement (currently there's no info about 2025.06 at all), so we can further improve it in follow-up PRs.

[bedroge]

I've collapsed the CPU target columns into a single one, I think it looks better now:

[bedroge]

I've replaced all the <span class="software-eessi-version-XXXX.06">XXXX.06</span> elements by variables that are defined at the op of the pages. This makes the markdown/HTML code for the tables a bit cleaner/shorter.

[bedroge]

Also disabled the TOC for the CPU page, resulting in a wider table (and the long CPU target names are no longer split into two lines):

And, just to ensure that things still render correctly with the new variables, this is the GPU page:

[casparvl]

Looks good to me. Thanks Bob, it's been a thorn in my side that our efforts on the 2025.06 GPU support weren't "visible" yet - now they are. And it looks a lot more attractive visually than it used to. Nice!