Ci: Fix ci for another new machine

.forgejo/workflows/demo.yaml

@@ -3,24 +3,14 @@ on: [push, pull_request]
 
 jobs:
   build-and-test:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     
-    container:
-      image: rust:alpine
-
     steps:
-      - name: Install Git
-        run: apk add --no-cache git
+    - name: Checkout code
+      uses: actions/checkout@v4
+      
+    - name: Build
+      run: cargo build --verbose
 
-      - name: Checkout code
-        env:
-          REPO_TOKEN: ${{ secrets.CHECKOUT_TOKEN }}
-        run: |
-          git clone https://oauth2:${{ env.REPO_TOKEN }}@git.rustprogersteam.ru/${{ github.repository }}.git .
-          git checkout ${{ github.sha }}
-
-      - name: Build
-        run: cargo build --verbose
-
-      - name: Test
-        run: cargo test --verbose
+    - name: Test
+      run: cargo test --verbose