Update action.yml

Author: mcbarton

.github/actions/Build_and_Test_cppyy/action.yml

@@ -146,8 +146,9 @@ runs:
         mkdir -p $env:CPPINTEROP_DIR\lib build
         cd build
         # Install CppInterOp
-        (cd $env:CPPINTEROP_BUILD_DIR
-        cmake --build . --target install --parallel ${{ env.ncpus }} )
+        cd $env:CPPINTEROP_BUILD_DIR
+        cmake --build . --target install --parallel ${{ env.ncpus }}
+        cd ..\cppyy-backend\build\
         # Build and Install cppyy-backend
         cmake -DCppInterOp_DIR=$env:CPPINTEROP_DIR ..
         cmake --build . --parallel ${{ env.ncpus }}