Update footer for GraphQLConf 2026 (#2338)

Fixes this:

<img width="1080" height="491" alt="Screenshot 2026-02-19 at 11 17
21 AM"
src="https://github.com/user-attachments/assets/ec02d4eb-62ce-45b6-abbb-814be6ee3816"
/>

Author: bignimbus

src/components/footer/conference-footer-box.tsx

@@ -22,15 +22,15 @@ export function ConferenceFooterBox({
     >
       <div className="flex flex-1 flex-col gap-4 border-b border-pri-lighter p-4 dark:border-pri-light/50">
         <h2 className="font-mono text-2xl uppercase leading-none md:text-3xl">
-          <span className="max-xs:hidden">Join</span> GraphQLConf 2025
+          <span className="max-xs:hidden">Join</span> GraphQLConf 2026
         </h2>
       </div>
 
       <div className="typography-body-sm flex font-sans">
         <div className="flex-1 justify-center border-r border-pri-lighter p-4 dark:border-pri-light/50">
-          September <span className="whitespace-nowrap">08–10</span>
+          May <span className="whitespace-nowrap">06–07</span>
           <br />
-          Amsterdam, Netherlands
+          Menlo Park, California
         </div>
 
         <div className="flex w-[min(calc(25%-.5px),73.5px)] items-center justify-center">

src/components/footer/index.tsx

@@ -107,7 +107,7 @@ const FOOTER_SECTIONS: FooterSection[] = [
   },
 ]
 
-const CONFERENCE_YEAR = 2025
+const CONFERENCE_YEAR = 2026
 const HAS_CONFERENCE_BOX = true
 
 export function Footer() {