Remove deprecated reviewers section

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

Author: vikin91

.github/dependabot.yml

@@ -7,35 +7,23 @@ updates:
       interval: 'weekly'
       day: 'wednesday'
     open-pull-requests-limit: 3
-    reviewers:
-      - 'stackrox/sensor-ecosystem'
-      - 'RTann'
 
   - package-ecosystem: 'gomod'
     directory: '/'
     schedule:
       interval: 'weekly'
       day: 'wednesday'
     open-pull-requests-limit: 3
-    reviewers:
-      - 'stackrox/sensor-ecosystem'
-      - 'RTann'
   - package-ecosystem: 'gomod'
     directory: '/_integration-tests'
     schedule:
       interval: 'weekly'
       day: 'wednesday'
     open-pull-requests-limit: 3
-    reviewers:
-      - 'stackrox/sensor-ecosystem'
-      - 'RTann'
   - package-ecosystem: 'gomod'
     directory: '/tools'
     schedule:
       interval: 'weekly'
       day: 'wednesday'
     open-pull-requests-limit: 3
-    reviewers:
-      - 'stackrox/sensor-ecosystem'
-      - 'RTann'