fix: update installation command in python-package.yml to install core dependencies

.github/workflows/python-package.yml

@@ -82,7 +82,7 @@ jobs:
     - name: Install mineru
       run: |
         python -m pip install --upgrade pip
-        pip install -e .[all]
+        pip install -e .[core]
 
   build:
     needs: [ check-install ]