update release 1.4 date

Author: tomkralidis

workshop/jupyter/content/notebooks/01-introduction.ipynb

@@ -8,7 +8,7 @@
    "source": [
     "#### Doing Geospatial in Python\n",
     "\n",
-    "Version: 1.4, 2024-07-02\n",
+    "Version: 1.4, 2024-07-01\n",
     "\n",
     "<img style=\"float: left;\" src=\"images/geopython-logo.png\">\n",
     "\n",