Update data science walkthrough illustrations

package.json

@@ -202,11 +202,7 @@
                         "title": "Open an existing Python project",
                         "description": "If you already have an existing Python project on your machine:\n[Open Folder](command:workbench.action.files.openFileFolder)\n \nIf you would like to clone a Python project from GitHub:\n[Clone a Git repository](command:git.clone)",
                         "media": {
-                            "image": {
-                                "light": "resources/walkthrough/open-folder-light.png",
-                                "dark": "resources/walkthrough/open-folder-dark.png",
-                                "hc": "resources/walkthrough/open-folder-hc.png"
-                            },
+                            "svg": "resources/walkthrough/open-folder.svg",
                             "altText": "Open a folder"
                         },
                         "completionEvents": [
@@ -219,11 +215,7 @@
                         "title": "Open an existing Python project",
                         "description": "To start, open a Python folder/project.\nIf you already have an existing Python project on your machine:\n[Open Folder](command:workbench.action.files.openFolder)\n \nIf you would like to clone a Python project from GitHub:\n[Clone a Git repository](command:git.clone)",
                         "media": {
-                            "image": {
-                                "light": "resources/walkthrough/open-folder-light.png",
-                                "dark": "resources/walkthrough/open-folder-dark.png",
-                                "hc": "resources/walkthrough/open-folder-hc.png"
-                            },
+                            "svg": "resources/walkthrough/open-folder.svg",
                             "altText": "Open a folder"
                         },
                         "completionEvents": [
@@ -236,11 +228,7 @@
                         "title": "Create a new Jupyter Notebook",
                         "description": "To create a new Jupyter Notebook, you can right click in the file explorer and create a new file with an .ipynb extension anytime.\n \nAlternatively, you can open the [Command Palette](command:workbench.action.showCommands) and run the command \n``Jupyter: Create New Blank Notebook``.\n[Create new Jupyter Notebook](command:toSide:jupyter.createnewnotebook)",
                         "media": {
-                            "image": {
-                                "light": "resources/walkthrough/new-notebook-light.png",
-                                "dark": "resources/walkthrough/new-notebook-dark.png",
-                                "hc": "resources/walkthrough/new-notebook-hc.png"
-                            },
+                            "svg": "resources/walkthrough/create-notebook.svg",
                             "altText": "Creating a new Jupyter notebook"
                         },
                         "completionEvents": [
@@ -252,11 +240,7 @@
                         "title": "Open the Python Interactive Window",
                         "description": "The Python Interactive Window is a Python shell where you can execute and view the results of your Python code. You can create cells on a Python file by typing ``#%%``.\n \nTo open the interactive window anytime, open the [Command Palette](command:workbench.action.showCommands) and run the command \n``Jupyter: Create Interactive Window``.\n[Open Interactive Window](command:toSide:jupyter.createnewinteractive)",
                         "media": {
-                            "image": {
-                                "dark": "resources/walkthrough/interactive-window-dark.png",
-                                "light": "resources/walkthrough/interactive-window-light.png",
-                                "hc": "resources/walkthrough/interactive-window-hc.png"
-                            },
+                            "svg": "resources/walkthrough/interactive-window.svg",
                             "altText": "Opening python interactive window"
                         },
                         "completionEvents": [