fix: video ads are only for platinum and above (#1538)

Author: deutranium

src/content/pages/sponsorship/information.mdx

@@ -42,7 +42,7 @@ Thank you again for supporting EuroPython. We’re excited to have you on board!
 - **[Job Posting on EuroPython Blog Submission](#job-posting-on-europython-blog)**: Keystone, Diamond, Platinum, Gold, Silver
 - **[Sponsor Highlight on Website Submission](#sponsor-highlight-page-on-website)**: Keystone, Diamond, Platinum
 - **[Sponsor Spotlight in Newsletters Submission](#sponsor-spotlight-in-europython-newsletters)**: Keystone, Diamond, Platinum
-- **[Video Ads submission (with & without Audio)](#video-ads)**: Keystone, Diamond, Platinum, Gold, Silver
+- **[Video Ads submission (with Audio)](#video-ads)**: Keystone, Diamond, Platinum
 - **[Media Corner Interview Info Submission](#media-corner-access-at-the-conference)**: Keystone, Diamond, Platinum
 - **[YouTube Short Submission](#custom-youtube-short)**: Keystone, Diamond, Platinum