Adds using namespace std to fmt's smoke test

This generates a compiler error w/ nvcc. It's preprocessor replaces
`std:runtime_error` with `class std::runtime_error' and then complains
that `return class std::runtime_error' is invalid.

Credit: Ryan Quinlan provided this simple reproducer and the key to a simple fix

Co-Authored-By: Ryan Quinlan <[email protected]>

src/thirdparty/tests/CMakeLists.txt

@@ -130,11 +130,14 @@ endif()
 #------------------------------------------------------------------------------
 # Smoke test for fmt third party library
 #------------------------------------------------------------------------------
+set(fmt_smoke_dependencies fmt gtest)
+blt_list_append( TO fmt_smoke_dependencies ELEMENTS cuda IF ENABLE_CUDA)
+
 blt_add_executable(
     NAME fmt_smoke_test
     SOURCES fmt_smoke.cpp
     OUTPUT_DIR ${TEST_OUTPUT_DIRECTORY}
-    DEPENDS_ON fmt gtest
+    DEPENDS_ON ${fmt_smoke_dependencies}
     FOLDER axom/thirdparty/tests )
 
 axom_add_test(NAME    fmt_smoke

src/thirdparty/tests/fmt_smoke.cpp

@@ -16,6 +16,10 @@
 
 #include "gtest/gtest.h"
 
+// Note: The following line generates an error with nvcc on [email protected]
+// Axom has a patch to workaround this error.
+using namespace std;
+
 //-----------------------------------------------------------------------------
 TEST(fmt_smoke, basic_use)
 {