Update Sponsors.tsx

Author: iancheung0202

src/app/(landing)/Sponsors.tsx

@@ -18,6 +18,7 @@ export default function Sponsors() {
                 <Sponsor href="https://www.desmos.com/" src="/sponsors/DesmosLogo-B.svg" alt="Desmos" />
                 <Sponsor href="https://stanfordresearchpark.com/" src="/sponsors/SRP_Lockup_Primary_Gold_RGB.png" alt="Stanford Research Park" />
                 <Sponsor href="https://www.digipen.edu/" src="/sponsors/DigiPen.png" alt="DigiPen" />
+                <Sponsor href="https://gunn.paloaltopta.org/" src="/sponsors/Gunn-PTSA.png" alt="Gunn PTSA" />
                 {/*<Sponsor href="https://www.applied-computing.org/" src="/sponsors/ACF.png" alt="Applied Computing Foundation" />
                 
                 <Sponsor href="https://www.hudsonrivertrading.com/" src="/sponsors/HRT.png" alt="Hudson River Trading" />