add upgrade

sql.ipynb

@@ -39,7 +39,7 @@
    "outputs": [],
    "source": [
     "%%capture\n",
-    "!pip install nimport azure-kusto-notebooks"
+    "!pip install --upgrade nimport azure-kusto-notebooks"
    ]
   },
   {
@@ -309,7 +309,7 @@
    "version": "3.7.4"
   },
   "nteract": {
-   "version": "0.14.5"
+   "version": "0.15.0"
   }
  },
  "nbformat": 4,