Tutorials - UAVSAR - Update plot to work in 2024

Unfortunately the call to add terrain lables to a plot using
contextily does not render. Only a small stylistic change and the main
content of the tutorial is still preserved.

book/tutorials/uavsar/3_interferometric_swe_inversion.ipynb

@@ -174,7 +174,8 @@
     "ax.set_ylim(38.75, 39.3)\n",
     "\n",
     "# Add background map\n",
-    "cx.add_basemap(ax, crs=img.rio.crs, source = cx.providers.Stamen.TerrainLabels)\n",
+    "# Unfortunately, the below line does not render as of 20240301\n",
+    "# cx.add_basemap(ax, crs=img.rio.crs, source = cx.providers.Stamen.TerrainLabels)\n",
     "cx.add_basemap(ax, crs=img.rio.crs, alpha = 0.8, source = cx.providers.USGS.USImageryTopo)\n",
     "plt.title('Overview Map')\n",
     "plt.show()"