CI: fix: package_managers.dependabot.dependabot-missing-cooldown.dependabot-missing-cooldown security vulnerability (#3489)

Automated security fix generated by OrbisAI Security

.github/dependabot.yml

@@ -4,6 +4,8 @@ updates:
     directory: "/"
     schedule:
       interval: "monthly"
+    cooldown:
+      default-days: 7
     groups:
       github-actions:
         patterns: