Upgrade node to v22 and add CDK bootstrap step

.github/workflows/deploy.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Set up Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: '20'
+          node-version: '22'
           cache: 'npm'
           cache-dependency-path: 'aws_cdk/package-lock.json'
 
@@ -35,6 +35,11 @@ jobs:
           aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
           aws-region: ${{ secrets.AWS_REGION || 'ap-south-1' }}
 
+      - name: Bootstrap CDK Environment
+        run: |
+          cd aws_cdk
+          npx cdk bootstrap aws://${{ secrets.AWS_ACCOUNT_ID }}/${{ secrets.AWS_REGION || 'ap-south-1' }}
+
       - name: Deploy CDK Stack
         run: |
           cd aws_cdk