updates to t4lysozyme rbfe example (#246)

* bump rc releases to v1.7.0

* bump CI to use python 3.12

* update README

* bump binder env version for testing

* updates to t4lysozyme rbfe example

Author: atravitz

openmm_rbfe/OpenFE_showcase_1_RBFE_of_T4lysozyme.ipynb

@@ -44,7 +44,7 @@
     "if \"COLAB_RELEASE_TAG\" in os.environ:\n",
     "    !pip install -q condacolab\n",
     "    import condacolab\n",
-    "    condacolab.install_from_url(\"https://github.com/OpenFreeEnergy/openfe/releases/download/v1.0.0/OpenFEforge-1.0.0-Linux-x86_64.sh\")"
+    "    condacolab.install_from_url(\"https://github.com/OpenFreeEnergy/openfe/releases/download/v1.7.0/OpenFEforge-1.7.0-Linux-x86_64.sh\")"
    ]
   },
   {
@@ -885,6 +885,7 @@
     "\n",
     "rbfe_settings.simulation_settings.equilibration_length = 10 * unit.picosecond\n",
     "rbfe_settings.simulation_settings.production_length = 50 * unit.picosecond\n",
+    "rbfe_settings.engine_settings.gpu_device_index = None  # default is to require CUDA, None allows for falling back to OpenCL or CPU\n",
     "\n",
     "pprint(rbfe_settings.simulation_settings.dict())"
    ]