Fix Pandas >= 2.0.0 change in default GroupBy behaviour.

From Pandas changelog:
"Changed default of numeric_only in various DataFrameGroupBy methods; all methods now default to numeric_only=False (GH46072)."
See pandas-dev/pandas#46072

PrivateDataset/cluster_deep.ipynb

@@ -998,7 +998,7 @@
     "# Save the ametrics on a CSV file\n",
     "results.to_csv(\"results/metrics_deepclust.csv\", index=False)\n",
     "\n",
-    "results_mean = results.set_index([\"rl_method\",\"clust_method\"]).groupby(level=[0,1]).mean()\n",
+    "results_mean = results.set_index([\"rl_method\",\"clust_method\"]).groupby(level=[0,1]).mean(numeric_only=True)\n",
     "results_mean = results_mean.iloc[:,1:]\n",
     "metrics=['same_clust','Acc','ARI','AMI','Sil']\n",
     "results_mean.style.background_gradient(axis=0, cmap=\"cividis\", text_color_threshold=0.3, subset=metrics).format('{:.2f}', subset=metrics)"
@@ -1372,7 +1372,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.8.8"
+   "version": "3.11.3"
   },
   "toc-autonumbering": true
  },