Updated Ragger tests to use the new private CAL key

.github/workflows/ci-workflow.yml

@@ -270,8 +270,6 @@ jobs:
           sudo apt install -y qemu-user-static
 
       - name: Run tests
-        env:
-          CAL_SIGNATURE_TEST_KEY: ${{ secrets.CAL_SIGNATURE_TEST_KEY }}
         run: |
           cd tests/ragger
           . ./venv/bin/activate