chore: replace Python heredoc with inline Node.js script in update-command-line-tools workflow

[Copilot]

The version-bump cron workflow used a Python <<'EOF' heredoc to patch action.yml and README.md, which was harder to read and inconsistent with the JavaScript already used in the "Create Pull Request" step.

Changes

• update-command-line-tools.yml: Replaced the Python heredoc with an inline node script using fs.readFileSync/writeFileSync and String.replace() with regex

const fs = require('fs');
const version = process.env.VERSION;

let actionYml = fs.readFileSync('action.yml', 'utf8');
actionYml = actionYml.replace(
  /(  command-line-tools-version:[\s\S]*?default: ")[^"]*"/,
  `$1${version}"`
);
fs.writeFileSync('action.yml', actionYml);

let readme = fs.readFileSync('README.md', 'utf8');
readme = readme.replace(/(command-line-tools-version: )\d+/, `$1${version}`);
readme = readme.replace(
  /(# default: )\d+(\n\s*# see https:\/\/developer\.android\.com\/studio#command-tools)/,
  `$1${version}$2`
);
fs.writeFileSync('README.md', readme);

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