Update my-first-workflow.yaml

.woodpecker/my-first-workflow.yaml

@@ -1,8 +1,13 @@
 when:
   - event: push
     branch: main
- clone:
+clone:
-skip_clone: true
+  git:
+    image: woodpeckerci/plugin-git
+    settings:
+      depth: 50
+      lfs: false
+      skip_clone: true
 steps:
   - name: build
     image: debian