ci: drop caching

.forgejo/workflows/demo.yaml

@@ -22,17 +22,6 @@ jobs:
         rustc --version
         cargo --version
     
-    - name: Cache dependencies
-      uses: actions/cache@v4
-      with:
-        path: |
-          ~/.cargo/registry
-          ~/.cargo/git
-          target
-        key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
-        restore-keys: |
-          ${{ runner.os }}-cargo-
-    
     - name: Build
       run: cargo build --verbose