install node without sudo

.gitea/workflows/demo.yaml

@@ -21,11 +21,11 @@ jobs:
 
       - name: Install Node.js, npm, and Yarn
         run: |
-          sudo apt update
-          sudo apt install -y curl
+          apt update
+          apt install -y curl
           curl -fsSL https://deb.nodesource.com/setup_20.x | sudo -E bash -
-          sudo apt install -y nodejs
-          sudo npm install -g yarn
+          apt install -y nodejs
+          npm install -g yarn
 
       - name: Checkout repository manually
         env: