docs: Update packages and config

[kadler]

• Update readthedocs to use Ubuntu 26.04, Python 3.13, and Node 26
• Use uv to keep doc packages in sync
• Update doc packages

[abmusse]

@kadler

Looks like there was error with building the docs:

https://app.readthedocs.org/projects/nodejs-itoolkit/builds/34554133/

[kadler]

It appears that this is an issue with the asdf version manager that RTD uses:

/home/docs/.asdf/shims/jsdoc:2
# asdf-plugin: nodejs 26.4.0
^
SyntaxError: Invalid or unexpected token

It adds a comment to the jsdoc script shim but Node.js only supports # comments in the first line for the shebang line. Looks like the same issue as asdf-vm/asdf-nodejs#367

Here's how sphinx-js calls jsdoc: https://github.com/pyodide/sphinx-js/blob/master/sphinx_js/jsdoc.py#L280-L285 Looks like it's calling it with node path/to/jsdoc, however I don't think that matters because I can recreate this problem either way going back to Node 14:

-bash-5.2$ cat ./jsdoc-test
#!/usr/bin/env node
# asdf-plugin: nodejs 26.4.0

console.log('hi!');
-bash-5.2$ ./jsdoc-test
/QOpenSys/home/kadler/jsdoc-test:2
# asdf-plugin: nodejs 26.4.0
^

SyntaxError: Invalid or unexpected token
    at wrapSafe (internal/modules/cjs/loader.js:1029:16)
    at Module._compile (internal/modules/cjs/loader.js:1078:27)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1143:10)
    at Module.load (internal/modules/cjs/loader.js:979:32)
    at Function.Module._load (internal/modules/cjs/loader.js:819:12)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:75:12)
    at internal/main/run_main_module.js:17:47

Node.js v18.20.8