chore(renovate): configure node version consistency (#30816)

Issue number: N/A

---------

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## What is the current behavior?
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Core does not indicate what node version we should be running, which can
lead to inconsistent versions between local and workflows. These
inconsistencies can lead to workflow failures.

## What is the new behavior?
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this PR. -->

- Provides the node version within package
- Updates the node version of workflows and package at the same time

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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## Other information

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screenshots of how the component looks before and after the change. -->

core/package.json

@@ -2,6 +2,9 @@
   "name": "@ionic/core",
   "version": "8.7.11",
   "description": "Base components for Ionic",
+  "engines": {
+    "node": "24.x"
+  },
   "keywords": [
     "ionic",
     "framework",

renovate.json5

@@ -96,6 +96,15 @@
         "package.json"
       ],
       enabled: false
+    },
+    {
+      /**
+       * Group Node version updates into a single PR to update 
+       * the workflows and core package.json simultaneously.
+       */
+      matchDatasources: ["node-version"],
+      matchPackagePatterns: ["node"],
+      groupName: "node-version-updates"
     }
   ],
   dependencyDashboard: false,