Remove reviewers from Dependabot configuration

See https://github.blog/changelog/2025-04-29-dependabot-reviewers-configuration-option-being-replaced-by-code-owners/

Author: arnested

.github/dependabot.yml

@@ -7,23 +7,17 @@ updates:
     time: '04:00'
     timezone: Europe/Copenhagen
   open-pull-requests-limit: 10
-  reviewers:
-  - arnested
 - package-ecosystem: gomod
   directory: "/"
   schedule:
     interval: daily
     time: '04:00'
     timezone: Europe/Copenhagen
   open-pull-requests-limit: 10
-  reviewers:
-  - arnested
 - package-ecosystem: docker
   directory: "/"
   schedule:
     interval: daily
     time: '04:00'
     timezone: Europe/Copenhagen
   open-pull-requests-limit: 10
-  reviewers:
-  - arnested