feat: Upgrade to Node.js v24+ for full HTTPS support in Pyodide

[rgbkrk]

🎯 Problem Solved

Pyodide HTTPS requests were failing with URLError: <urlopen error unknown url type: https> and urllib3 requiring experimental WebAssembly flags:

Connection aborted.', HTTPException('urllib3 only works in Node.js with pyodide.runPythonAsync and requires the flag --experimental-wasm-stack-switching in versions of node <24.

This blocked essential functionality like pandas.read_csv() with HTTPS URLs and requests library usage.

🚀 Solution

Upgrade Node.js requirement to v24+ which provides native WebAssembly stack switching support, eliminating the need for experimental flags.

✅ What Now Works

All HTTPS operations in Python notebooks:

# Direct pandas HTTPS reading - now works!
df = pd.read_csv('https://docs.google.com/spreadsheets/d/abc123/export?format=csv')

# requests library HTTPS - works!
import requests
response = requests.get('https://api.example.com/data')

# urllib3 HTTPS - works!
import urllib3
http = urllib3.PoolManager()
resp = http.request('GET', 'https://httpbin.org/json')

## Context

Node.js v24 includes native WebAssembly JavaScript Promise Integration (JSPI) and stack switching support that Pyodide relies on for proper networking. Previous versions required `--experimental-wasm-stack-switching` flag.

This change aligns with Pyodide's official recommendations and modern JavaScript runtime capabilities.

[rgbkrk]

Eh. This doesn't always work. Switching to Deno tomorrow.