Use GitHub CODEOWNERS for dependabot reviewers

Author: nachtjasmin

.github/CODEOWNERS

@@ -0,0 +1,4 @@
+# As per the team configuration, this will assign one of us to be the reviewer
+# for incoming pull requests. If you want to change that, feel free to do this
+# in the team settings.
+* @Queer-Lexikon/karte

.github/dependabot.yml

@@ -4,15 +4,11 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
-    reviewers:
-      - nachtjasmin
 
   - package-ecosystem: "npm"
     directory: "/"
     schedule:
       interval: "weekly"
-    reviewers:
-      - nachtjasmin
     groups:
       all:
         patterns: ["*"]