Revert regression tests

Author: Joshua Kelly

.github/workflows/regression.yml

@@ -211,7 +211,7 @@ jobs:
         uses: docker://ghcr.io/su2code/su2/test-su2:250717-1402
         with:
           # -t <Tutorials-branch> -c <Testcases-branch>
-          args: -b ${{github.ref}} -t feature_turbo_ramps -c develop -s ${{matrix.testscript}}
+          args: -b ${{github.ref}} -t develop -c develop -s ${{matrix.testscript}}
       - name: Cleanup
         uses: docker://ghcr.io/su2code/su2/test-su2:250717-1402
         with: