Update column renaming method to be consistent with pandas 3.1.0 syntax

.pre-commit-config.yaml

@@ -1,5 +1,5 @@
 repos:
   - repo: https://github.com/kynan/nbstripout
-    rev: master
+    rev: 0.9.1
     hooks:
       - id: nbstripout

idaes_examples/notebooks/docs/surrogates/sco2/omlt/keras_training.ipynb

@@ -144,22 +144,25 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
     "# Import training data\n",
     "np.set_printoptions(precision=6, suppress=True)\n",
     "\n",
     "csv_data = pd.read_csv(datafile_path(\"500_Points_DataSet.csv\"))\n",
-    "csv_data.columns.values[0:6] = [\n",
+    "\n",
+    "new_names = [\n",
     "    \"pressure\",\n",
     "    \"temperature\",\n",
     "    \"enth_mol\",\n",
     "    \"entr_mol\",\n",
     "    \"CO2_enthalpy\",\n",
     "    \"CO2_entropy\",\n",
     "]\n",
+    "\n",
+    "csv_data.columns = new_names + list(csv_data.columns[6:])\n",
     "data = csv_data.sample(n=500)\n",
     "\n",
     "# Creating input_data and output_data from data\n",

idaes_examples/notebooks/docs/surrogates/sco2/pysmo/pysmo_training.ipynb

@@ -130,14 +130,16 @@
     "np.set_printoptions(precision=6, suppress=True)\n",
     "\n",
     "csv_data = pd.read_csv(datafile_path(\"500_Points_DataSet.csv\"))\n",
-    "csv_data.columns.values[0:6] = [\n",
+    "\n",
+    "new_names = [\n",
     "    \"pressure\",\n",
     "    \"temperature\",\n",
     "    \"enth_mol\",\n",
     "    \"entr_mol\",\n",
     "    \"CO2_enthalpy\",\n",
     "    \"CO2_entropy\",\n",
     "]\n",
+    "csv_data.columns = new_names + list(csv_data.columns[6:])\n",
     "data = csv_data.sample(n=500)\n",
     "\n",
     "input_data = data.iloc[:, :2]\n",