fix

.github/workflows/pre-main.yaml

@@ -51,6 +51,16 @@ jobs:
         with:
           ref: ${{ github.sha }}
 
+      - name: Install yaml dependency
+        run: pip3 install pyyaml
+        env:
+          SHELL: /bin/bash
+
+      - name: Extract dependent Pull Requests
+        uses: depends-on/depends-on-action@main
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Install checkmake
         run: |
           curl --location --output $CM_BIN --silent $CM_URL_LINUX