Update to leverage std::filesystem

Author: rjoomen

tesseract_motion_planners/simple/test/simple_planner_test_utils.hpp

@@ -46,9 +46,9 @@ class TesseractPlanningSimplePlannerUnit : public ::testing::Test
   {
     auto locator = std::make_shared<tesseract_common::GeneralResourceLocator>();
     Environment::Ptr env = std::make_shared<Environment>();
-    tesseract_common::fs::path urdf_path(
+    std::filesystem::path urdf_path(
         locator->locateResource("package://tesseract_support/urdf/lbr_iiwa_14_r820.urdf")->getFilePath());
-    tesseract_common::fs::path srdf_path(
+    std::filesystem::path srdf_path(
         locator->locateResource("package://tesseract_support/urdf/lbr_iiwa_14_r820.srdf")->getFilePath());
     EXPECT_TRUE(env->init(urdf_path, srdf_path, locator));
     env_ = env;