fix(@angular/cli): add Node.js 20 as supported version

Prior to this Node.js 20 was incorrectly being listed as unsupported.

Closes #26114

(cherry picked from commit 91dcae1)

Author: alan-agius4

packages/angular/cli/src/commands/version/cli.ts

@@ -23,7 +23,7 @@ interface PartialPackageInfo {
 /**
  * Major versions of Node.js that are officially supported by Angular.
  */
-const SUPPORTED_NODE_MAJORS = [18];
+const SUPPORTED_NODE_MAJORS = [18, 20];
 
 const PACKAGE_PATTERNS = [
   /^@angular\/.*/,