chore(renovate): open PRs immediately for Netlify packages

[Copilot]

Removes schedule restrictions for @netlify/ scoped packages so PRs are opened immediately when updates are available.

Changes

• Added packageRule matching ^@netlify/ with schedule: ["at any time"] to override inherited schedule constraints
• Rule placed first in packageRules array for precedence

{
  "description": "Open PRs immediately for @netlify/ packages without a schedule",
  "matchPackagePatterns": ["^@netlify/"],
  "schedule": ["at any time"]
}

Affects 17 @netlify/ packages currently in use.

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.