[deps]: Update angular-eslint monorepo to v20.6.0 (#911)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -74,8 +74,8 @@
   },
   "devDependencies": {
     "@angular-devkit/build-angular": "20.3.3",
-    "@angular-eslint/eslint-plugin-template": "20.4.0",
-    "@angular-eslint/template-parser": "20.4.0",
+    "@angular-eslint/eslint-plugin-template": "20.6.0",
+    "@angular-eslint/template-parser": "20.6.0",
     "@angular/compiler-cli": "20.3.3",
     "@electron/notarize": "2.5.0",
     "@electron/rebuild": "4.0.1",