Update rpi-makefile-ci.yml

Author: Divya-563

.github/workflows/rpi-makefile-ci.yml

@@ -13,7 +13,8 @@ jobs:
     runs-on: ubuntu-22.04
 
     steps:
-   
+     
+    - uses: actions/checkout@v3
     - run:
         git config --global user.email "divdus@gmail.com" && git config --global user.name "Divya-563"