Merge pull request #240 from plotly/may-2023-webinar-ad

Update sidebar ad to May 2023 webinar

Author: red-patience

Diff for: _includes/layouts/webinar_plug.html

@@ -1,5 +1,5 @@
 
-    <a href="https://plotly.com/careers/?utm_medium=graphing_libraries&utm_content=sidebar" target="_blank">
-      <img src="https://images.prismic.io/plotly-marketing-website/a9ba884c-ee2c-40f9-9c39-809ea1b5aac7_dash_doc_banner_career-01+%281%29.jpg?auto=compress,format"
-      style="width: 200px; height: 200px; position: fixed; bottom: 10px; left: 50px" alt="View all the positions that Plotly is hiring for!">
+    <a href="https://go.plotly.com/dash-partial-properties?utm_source=Webinar%3A+Partial+Properties+5%2F17%2F50&utm_medium=graphing_libraries&utm_content=sidebar" target="_blank">
+      <img src="https://images.prismic.io/plotly-marketing-website-2/6b8bd814-1dff-40bf-8f50-1feb19fef7f5_5.17_webinar_doc.jpg?auto=compress,format"
+      style="width: 200px; height: 200px; position: fixed; bottom: 10px; left: 50px" alt="Sign up for the upcoming webinar: Optimize Data App Performance with Dash 2.9.2">
     </a>