update python req to 3.10 consistently

doc/python_requirements.txt

@@ -1,5 +1,5 @@
 # Other requirements
-# Python >= 3.7
+# Python >= 3.10
 # Doxygen https://www.doxygen.nl/download.html
 #
 # Install Sphinx and required plugins with the following command

doc/source/index.rst

@@ -34,7 +34,7 @@ MPI library
   the MPI library is GPU-Aware. If unsure, check this last point with your system administrator.
 
 Python
-  When using *Idefix* with its python interface through the module `Pydefix`, *Idefix* relies on an external python>=3.8 interpreter with the module `pybind11 <https://pybind11.readthedocs.io>`_
+  When using *Idefix* with its python interface through the module `Pydefix`, *Idefix* relies on an external python>=3.10 interpreter with the module `pybind11 <https://pybind11.readthedocs.io>`_
   installed.
 
 ================

doc/source/modules/pydefix.rst

@@ -16,7 +16,7 @@ Before you start
 Pybind11 installation
 +++++++++++++++++++++
 
-In order to use pydefix, you need to be working in a python>=3.8 environement that includes `pybind11 <https://pybind11.readthedocs.io>`_. Follow the instruction of your package manager to install pybind11>=2.12.
+In order to use pydefix, you need to be working in a python>=3.10 environement that includes `pybind11 <https://pybind11.readthedocs.io>`_. Follow the instruction of your package manager to install pybind11>=2.12.
 
 Pydefix usage
 -------------