Update dates-sponsors

Author: Cathy-matu

…mages/sponsors/previous/ruby_central.png …images/sponsors/current/ruby_central.pngapp/assets/images/sponsors/previous/ruby_central.png renamed to app/assets/images/sponsors/current/ruby_central.png app/assets/images/sponsors/previous/ruby_central.png renamed to app/assets/images/sponsors/current/ruby_central.png

@@ -19,7 +19,7 @@ module ChaptersHelper
   FEATURED_SPONSORS = [
     { image: 'sponsors/current/solutech_official.svg', link: 'https://solutech.co.ke', alt: 'Solutech' },
     { image: 'sponsors/current/app_signal.png', link: 'https://www.appsignal.com', alt: 'App Signal' },
-    { image: 'sponsors/previous/shopify.webp', link: 'https://www.shopify.com/', alt: 'Shopify' },
+    { image: 'sponsors/current/ruby_central.png', link: 'https://rubycentral.org/', alt: 'Ruby Central' },
     { image: 'sponsors/current/kopo_kopo.png', link: 'https://kopokopo.co.ke', alt: 'Kopo Kopo' },
     { image: 'sponsors/current/finplus.png', link: 'https://finplusgroup.com', alt: 'Finplus Group' },
     { image: 'sponsors/current/typesense-logo.png', link: 'https://typesense.org/', alt: 'Typesense' },
@@ -32,11 +32,9 @@ module ChaptersHelper
   PREVIOUS_SPONSORS = [
     { image: 'sponsors/previous/shopify.webp', link: 'https://www.shopify.com/', alt: 'Shopify' },
     { image: 'sponsors/previous/microverse.png', link: 'https://www.microverse.org/', alt: 'Microverse' },
-    { image: 'sponsors/previous/ruby_central.png', link: 'https://rubycentral.org/', alt: 'Ruby Central' },
     { image: 'sponsors/previous/planet_argon.png', link: 'https://www.planetargon.com', alt: 'Planet Argon' },
     { image: 'sponsors/previous/nairobits.png', link: 'https://www.nairobits.com/', alt: 'Nairobits' },
     { image: 'sponsors/previous/turing.png', link: 'https://www.turing.com/', alt: 'Turing' },
-    { image: 'sponsors/previous/kopokopo.png', link: 'https://kopokopo.co.ke', alt: 'Kopokopo' },
     { image: 'sponsors/previous/kwara.png', link: 'https://kwara.com/', alt: 'Kwara' },
     { image: 'sponsors/previous/ihub.png', link: 'https://ihub.co.ke/', alt: 'iHub, Nairobi' },
     { image: 'sponsors/previous/friendly_rb.jpg', link: 'https://friendlyrb.com/', alt: 'FriendlyRB' },

app/assets/images/sponsors/current/shopify.webp

@@ -7,7 +7,7 @@
       <div class="text-center">
       <span class="text-2xl md:text-4xl font-extrabold text-white bg-red-600 bg-opacity-90 px-6 py-3 rounded-lg shadow-lg inline-block transform hover:scale-105 transition-transform duration-300 sm:inline-block group-hover:inline-block">
         Ruby Conf Africa 2026 🔗
-        <p class="mt-2 text-white text-lg md:text-lg font-semibold">22nd–26th August 2026</p>
+        <p class="mt-2 text-white text-lg md:text-lg font-semibold">21st–22nd August 2026</p>
         <p class="mt-4 text-white text-lg md:text-lg font-medium hidden sm:block">Join the largest Ruby conference in Africa!</p>
       </span>
     <% end %>