Fix workflow issue

Author: mcbarton

.github/workflows/MacOS.yml

@@ -468,7 +468,7 @@ jobs:
           CPLUS_INCLUDE_PATH="${LLVM_DIR}/llvm/include:${LLVM_DIR}/clang/include:${LLVM_BUILD_DIR}/include:${LLVM_BUILD_DIR}/tools/clang/include:$PWD/include"
         fi
 
-        export CB_PYTHON_DIR="${{ github.workspace }}/cppyy-backend/python"
+        export CB_PYTHON_DIR="${{ github.workspace }}/python"
         export CPPINTEROP_DIR="$CB_PYTHON_DIR/cppyy_backend"
 
         # Build CppInterOp next to cling and llvm-project.

.github/workflows/Ubuntu.yml

@@ -431,7 +431,7 @@ jobs:
           CPLUS_INCLUDE_PATH="${LLVM_DIR}/llvm/include:${LLVM_DIR}/clang/include:${LLVM_BUILD_DIR}/include:${LLVM_BUILD_DIR}/tools/clang/include:$PWD/include"
         fi
 
-        export CB_PYTHON_DIR="${{ github.workspace }}/cppyy-backend/python"
+        export CB_PYTHON_DIR="${{ github.workspace }}/python"
         export CPPINTEROP_DIR="$CB_PYTHON_DIR/cppyy_backend"
 
         # Build CppInterOp next to cling and llvm-project.