Add hightec

Author: erikjee

public/images/sponsors/hightec.png

@@ -184,6 +184,12 @@ const featured_talks = [alice, julius, pietro, alex, niko, miguel];
                 image="ixon.svg"
                 link="https://www.ixon.cloud/en/"
             />
+            <Sponsor
+                name="HighTec"
+                tier="supporter"
+                image="hightec.png"
+                link="https://hightec-rt.com/"
+            />
             <Sponsor
                 name="NLnet Labs"
                 tier="supporter"