Update Node.js version in CI configuration; change from 18 to 22 for compatibility with latest features

Author: Lukecsharpwalker

.github/workflows/PR_Check.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Set up Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: '18'
+          node-version: '22'
 
       - name: Generate environment.ts from secrets
         shell: bash