Update CI

Author: sagiegurari

.github/workflows/ci.yml

@@ -25,6 +25,11 @@ jobs:
       with:
         repository: sagiegurari/c_string_buffer
         path: target/c_string_buffer
+    - name: Checkout c_fsio
+      uses: actions/checkout@v2
+      with:
+        repository: sagiegurari/c_fsio
+        path: target/c_fsio
     - name: Configure
       shell: bash
       working-directory: ${{runner.workspace}}/target