Fix the rootdir in the nouse_install.yml (#273)

Work around the pytest issue pytest-dev/pytest#11781 by replacing `pytest rootdir=./tmp -v` with `pytest rootdir=. -v`

Co-authored-by: ThreeMonth03 <sankagetsu.cs08@nycu.edu.tw>

.github/workflows/nouse_install.yml

@@ -83,7 +83,11 @@ jobs:
         python3 -c 'import os; print(os.getcwd())'
         python3 -c "import modmesh; print(modmesh.__file__)"
         python3 -c "import _modmesh; print(_modmesh.__file__)"
-        pytest --rootdir=/tmp -v
+        # The following command is the original commend, and it will fail on pytest == 8.0.0 .
+        # pytest --rootdir=/tmp -v
+        # Here is the issue and temporary solution: https://github.com/pytest-dev/pytest/issues/11781  
+        # The alternative command to solve the issue is ```pytest --rootdir=. -v```.
+        pytest --rootdir=. -v
         cd ..
 
   nouse_install_macos:
@@ -166,5 +170,9 @@ jobs:
           python3 -c 'import os; print(os.getcwd())'
           python3 -c "import modmesh; print(modmesh.__file__)"
           python3 -c "import _modmesh; print(_modmesh.__file__)"
-          pytest --rootdir=/tmp -v
+          # The following command is the original commend, and it will fail on pytest == 8.0.0 .
+          # pytest --rootdir=/tmp -v
+          # Here is the issue and temporary solution: https://github.com/pytest-dev/pytest/issues/11781  
+          # The alternative command to solve the issue is ```pytest --rootdir=. -v``` .
+          pytest --rootdir=. -v
           cd ..