feat: Add cooldown setting for Dependabot updates (#3143)

Author: mfranzke

.github/dependabot.yml

@@ -9,6 +9,8 @@ updates:
       timezone: 'Europe/Berlin'
     pull-request-branch-name:
       separator: '-'
+    cooldown:
+      default-days: 3
 
   - package-ecosystem: 'npm'
     directory: '/'
@@ -17,6 +19,8 @@ updates:
       interval: 'daily'
       time: '04:00'
       timezone: 'Europe/Berlin'
+    cooldown:
+      default-days: 3
     ignore:
       # We ignore output targets they would introduce breaking changes
       - dependency-name: '@stencil/react-output-target'