Testing symlink variant

Author: mxHuber

.github/workflows/ci.yml

@@ -72,6 +72,7 @@ jobs:
         uses: hendrikmuhs/ccache-action@v1.2
         with:
           key: ${{ github.job }}-${{ matrix.os }}-${{ matrix.build }}
+          create-symlink: true
 
       - name: Run Unittests
         shell: bash