Merge pull request alphagov#2314 from alphagov/add-measuring-value-video

Add ‘Measuring the value of the GOV.UK Design System’ talk to the blog posts, videos and podcasts page

src/community/blogs-talks-podcasts/index.md.njk

@@ -44,6 +44,8 @@ See how the Design System helps service teams across government.
 
 [GDS Podcast, GOV.UK Design System](https://gds.blog.gov.uk/2020/02/28/podcast-gov-uk-design-system/) (podcast) - 28 February 2020
 
+[Measuring the value of the GOV.UK Design System](https://www.youtube.com/watch?v=eSkVtSEAe98) (video) - 5 February 2020
+
 [How the GOV.UK Design System can work alongside other government design resources](https://designnotes.blog.gov.uk/2019/02/14/how-the-gov-uk-design-system-can-work-alongside-other-government-design-resources/) (blog) - 14 February 2019
 
 [The benefits of migrating GOV.UK Pay’s codebase to the GOV.UK Design System](https://technology.blog.gov.uk/2018/12/21/the-benefits-of-migrating-gov-uk-pays-codebase-to-the-gov-uk-design-system/) (blog) - 21 December 2018