added yarn cache to deployment script

.github/workflows/deploying.yml

@@ -18,12 +18,13 @@ jobs:
       uses: actions/setup-node@v3
       with:
         node-version: 18
+        cache: 'yarn'
     
     - name: Install Yarn packages
       run: yarn install
     
     - name: Build project
-      run: npm run build
+      run: yarn build
 
     - name: Upload production-ready build files
       uses: actions/upload-artifact@v3