feat: use new stickers link

src/components/Footer.astro

@@ -120,13 +120,6 @@ const nowYear = (new Date()).getFullYear()
         >
             Sponsor on Opencollective
         </a>
-        <a
-                href="https://vikunja.cloud/stickers?utm_source=io&utm_medium=io&utm_campaign=footer"
-                rel="noopener"
-                class="py-2 hover:underline md:pt-0"
-        >
-            Buy Stickers
-        </a>
     </div>
     <div class="mt-4 flex w-full flex-col md:mt-0 sm:w-1/2 md:w-1/5">
         <h3 class="mb-4 font-display text-base font-bold md:mb-6">Product</h3>
@@ -144,9 +137,13 @@ const nowYear = (new Date()).getFullYear()
         >
             Get it Hosted
         </a>
-        <a href="https://vikunja.cloud/stickers" class="py-2 hover:underline md:pt-0" rel="noopener"
-        >Stickers</a
+        <a
+            href="/stickers"
+            rel="noopener"
+            class="py-2 hover:underline md:pt-0"
         >
+            Buy Stickers
+        </a>
     </div>
     <div class="md:hidden basis-full h-0"></div>
     <div class="mt-4 flex w-full flex-col md:mt-0 sm:w-1/2 md:w-1/5">

src/content/changelog/release-0.18.0.mdoc

@@ -95,4 +95,4 @@ As usual, you can find the full changelogs in the respective [frontend](https://
 And that's all folks!
 Be sure to check out [the community forum](https://community.vikunja.io) and let me know what you think.
 
-Oh and [buy a sticker pack](https://vikunja.cloud/stickers) to support the project!
+Oh and [buy a sticker pack](https://vikunja.io/stickers) to support the project!

src/pages/changelog/[...slug].astro

@@ -61,7 +61,7 @@ const description = post.data.description || Astro.props?.frontmatter?.descripti
                 If Vikunja is useful to you, please consider
                 <a href="https://www.buymeacoffee.com/kolaente" target="_blank" class="!text-white !underline">buying me a coffee</a>,
                 <a href="https://github.com/sponsors/kolaente" target="_blank" class="!text-white !underline">sponsoring me on GitHub</a>
-                or <a href="https://vikunja.cloud/stickers" class="!text-white !underline">buying a sticker pack</a>.
+                or <a href="https://vikunja.io/stickers" class="!text-white !underline">buying a sticker pack</a>.
                 I'm also offering <a href="https://vikunja.cloud" class="!text-white !underline">a hosted version of
                 Vikunja</a> if you want a hassle-free solution for yourself or your team.
             </Callout>