adds sponsors

Author: erikjee

src/pages/index.astro

@@ -126,6 +126,12 @@ const featured_talks = [alice, julius, pietro, alex, niko, miguel];
                 image="arm-blue.png"
                 link="https://www.arm.com/"
             />
+            <Sponsor
+                name="Infineon"
+                tier="silver"
+                image="infineon.png"
+                link="https://www.infineon.com/"
+            />
         </SponsorTier>
         <SponsorTier name="Bronze sponsors">
             <Sponsor
@@ -168,6 +174,12 @@ const featured_talks = [alice, julius, pietro, alex, niko, miguel];
                 image="makepad.png"
                 link="https://makepad.dev/"
             />
+            <Sponsor
+                name="Slint"
+                tier="supporter"
+                image="slint.png"
+                link="https://slint.dev/"
+            />
             <!-- <Sponsor
                 name="Corrode"
                 tier="supporter"