Added new update card for first time speakers' workshop (#1192)

Added new update card for first time speakers' workshop

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Nikoś <[email protected]>

Author: 3 people

src/components/sections/updates.astro

@@ -9,7 +9,7 @@ let deadlines = await getCollection("deadlines");
 deadlines = deadlines
   .sort((a, b) => a.slug.localeCompare(b.slug))
   .reverse()
-  .slice(0, 5);
+  .slice(0, 6);
 
 ---
   <section class="prose-xl m-0 my-12 p-0">

src/content/deadlines/06_mentorship.md

@@ -0,0 +1,9 @@
+---
+title: Speakers' Workshop
+subtitle: Register Now!
+url: https://forms.gle/T8rc73sbyu3KbLNKA
+image: "mentorship1.jpg"
+---
+
+An online panel session with experienced community members sharing advice for
+**first-time and returning speakers**.