Update CodingInPublic ad for holiday sales (#12682)

Co-authored-by: ArmandPhilippot <[email protected]>
Co-authored-by: delucis <[email protected]>

Author: 3 people

src/components/RightSidebar/LearnAstroAd.astro

@@ -3,7 +3,7 @@ import { Image } from 'astro:assets';
 import CodingInPublic from './CodingInPublic.png';
 import { LinkButton } from '@astrojs/starlight/components';
 
-const offerUrl = 'https://learnastro.dev?code=ASTRO_PROMO';
+const offerUrl = 'https://learnastro.dev?code=ASTRO_HOLIDAY_PROMO';
 
 const idCount = (((Astro.locals as any)._ad_render_id as number | undefined) ??= 1);
 (Astro.locals as any)._ad_render_id++;
@@ -26,7 +26,7 @@ const headingId = `learn-astro-course-${idCount}`;
 			<span>•</span>
 			<span>Astro v5 ready</span>
 		</p>
-		<LinkButton href={offerUrl} class="cta" data-learn-astro-cta>Get 20% off</LinkButton>
+		<LinkButton href={offerUrl} class="cta" data-learn-astro-cta>Get 33% off</LinkButton>
 	</aside>
 </div>