fix: fix github action, checkout repositroy

Signed-off-by: STRRL <[email protected]>

Author: STRRL

.github/workflows/upload_image.yaml

@@ -15,6 +15,7 @@ jobs:
     outputs:
       image_tag: ${{ steps.image_tag.outputs.image_tag }}
     steps:
+      - uses: actions/checkout@v2~
       - name: Extract Image Tag
         shell: bash
         run: |