chore: bump @angular-eslint/schematics from 21.2.0 to 21.3.1

Bumps [@angular-eslint/schematics](https://github.com/angular-eslint/angular-eslint/tree/HEAD/packages/schematics) from 21.2.0 to 21.3.1.
- [Release notes](https://github.com/angular-eslint/angular-eslint/releases)
- [Changelog](https://github.com/angular-eslint/angular-eslint/blob/main/packages/schematics/CHANGELOG.md)
- [Commits](https://github.com/angular-eslint/angular-eslint/commits/v21.3.1/packages/schematics)

---
updated-dependencies:
- dependency-name: "@angular-eslint/schematics"
  dependency-version: 21.3.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package.json

@@ -35,7 +35,7 @@
     "@angular-eslint/builder": "^21.2.0",
     "@angular-eslint/eslint-plugin": "21.2.0",
     "@angular-eslint/eslint-plugin-template": "21.2.0",
-    "@angular-eslint/schematics": "^21.2.0",
+    "@angular-eslint/schematics": "^21.3.1",
     "@angular-eslint/template-parser": "21.2.0",
     "@angular/build": "^21.1.5",
     "@angular/cli": "^21.2.6",