Update run_tests.yaml

.forgejo/workflows/run_tests.yaml

@@ -8,12 +8,8 @@ jobs:
       image: python:3
     steps:
       - name: Check out repository
-        uses: actions/checkout@v4
-
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: "3.13"
+        run: |
+          git clone --depth 1 --branch main https://git.athemis.de/Athemis/doi2dataset.git
 
       - name: Install dependencies
         run: |
@@ -23,4 +19,5 @@ jobs:
 
       - name: Run tests
         run: |
+          cd doi2dataset
           pytest