Update links

Author: nikoshell

src/content/sponsors/ataccama/index.md

@@ -1,6 +1,6 @@
 ---
 name: Ataccama
-url: https://jobs.ataccama.com/
+url: https://ataccama.com/
 location: "Czechia"
 description:
   "Ataccama is an international software company full of data experts and

src/content/sponsors/picnic/index.md

@@ -1,6 +1,6 @@
 ---
 name: "Picnic"
-url: "https://jobs.picnic.app/en/home"
+url: "https://picnic.app/"
 location: "Germany"
 industry: "Grocery Delivery"
 description:

src/content/sponsors/travelperk/index.md

@@ -1,6 +1,6 @@
 ---
 name: TravelPerk
-url: https://grnh.se/e4647ad81us
+url: https://www.travelperk.com/
 location: "Spain"
 description:
   "TravelPerk is a travel-management company that provides companies with a